** Changed in: xserver-xorg-video-intel
Status: Unknown => Fix Released
** Changed in: xserver-xorg-video-intel
Importance: Unknown => Wishlist
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Good point Benjamin. It has been released as one of the Trusty HWE
updates.
Thanks!
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https://bugs.launchpad.net/bugs/1104230
Title:
DisplayPort 1.2 MST support is missing in the Intel
I think the status of this this bug should be set to "fix released". The
linked freedesktop bug report was already set to status "resolved fixed"
and I was able to setup DisplayPort MST with a Dell U2515H and an older
U2312HM on my Haswell desktop running 14.04.4.
** Changed in:
Changing Fonts to Waree fixed my issue.
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Title:
DisplayPort 1.2 MST support is missing in the Intel driver
To manage notifications about this
Like to report the following:
3.17.4-031704-generic
Dell E7250 lattitude running 14.10
Intel gfx
Dual DP Dell docking station. 2x Dell 24
MST works after updating to the 3.17 kernel. However the following has
happened(not sure if it requires a new bug rep)
Fonts on Windows are sporadic. I've
The current status of this bug is as follows:
- The current xorg stack with intel drivers from ppa:xorg-edgers/ppa is not
compatible with the kernel part backported to 3.13 and 3.16
- This feature seems to work seamlessly on my test hardware with Vivid
- It seems that the best solution will be to
This environment is not operational:
Dell Latitude e7440 (Gen4 HD Graphics 4400)
Docking station Pro3X with a single DisplayPort 1.2 port
Two Dell U2414H DisplayPort 1.2 capable monitors
Daisy Chain connections from Docking station to Mon1 then to Mon2
Xubuntu 14.10 64 bit
uname -r:
I'd like to confirm that Jace's solution (#127) worked for me using a
Lenovo T440s on an Ultra Dock with two displays connected on VGA and
HDMI. I upgraded to 14.10, updated to the 3.17.4 kernel, and rebooted.
Now both external monitors are recognised.
Thanks!
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So I was trying to follow this and get this set up on my Lenovo T440P
with a pro doc and two monitors (vga and dvi). I finally got it working
by taking the following steps, this took me a few days so if anyone
finds this maybe it'll help them too.
Initially I was on Trusty 14.04.
* Then I added
For what it's worth, this kernel seems to be working 100% fine for my set-up:
Linux dib 3.17.1-031701-generic #201410150735 SMP Wed Oct 15 11:36:31 UTC 2014
x86_64 x86_64 x86_64 GNU/Linux
When my laptop woke this morning, both external displays came back.
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Sorry for the long delay response. I just tested the 3.16.0-28 kernel
and unfortunately it doesn't even detect all of my displays correctly --
it only shows 1 external monitor in the display settings rather than
both. I get picture on both of them, but I can't set them up correctly
any more.
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Ben, could you paste the output of:
$ apt-cache policy linux-image-$(uname -r)
We need to be sure that you are using the patched version of the kernel
and not the standard Ubuntu kernel.
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Looks like I'm probably running the cached version, d'oh:
apt-cache policy linux-image-3.16.0-28
linux-image-3.16.0-28-generic:
Nakaluklok: 3.16.0-28.38
Kandidato: 3.16.0-28.38
Talaang Bersyon:
*** 3.16.0-28.38 0
500 http://ca.archive.ubuntu.com/ubuntu/ utopic-updates/main amd64
Ben, unfortunately this is the default Ubuntu kernel without this
feature.
You need to use version 3.16.0-28.37hf73386v20141212b2 to be able to
benefit from it.
Do install this version you should do:
sudo apt-get install
linux-image-3.16.0-28-generic=3.16.0-28.37hf73386v20141212b2
and then
Unfortunately, I have the same behaviour with your kernel:
➜ ~ uname -a
Linux dib 3.16.0-28-generic #37hf73386v20141212b2-Ubuntu SMP Fri Dec 12
08:30:38 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
http://people.mozilla.org/~bhearsum/sattap/080347a3.png
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Ben, I have updated the kernel version in my ppa. Could you please test
version 3.16.0-28.37hf73386v20141212b2 and compare the supsend/resume
behavior with what you observer using 3.17?
Thanks!
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Krzysztof, looks like you installed the kernel correctly, you are simply
booting into a newer kernel without the feature.
Please make sure you boot using 3.13.0-39.
To do so please choose kernel 3.13.0-39 from the GRUB menu during the
boot of your computer.
You can find more information how do
Can you confirm that when from terminal
$ uname -r
3.13.0-40-generic
I'm getting 3.13.0-40-generic is this correct ?
So I have even higher version that you recommend 3.13.0-39. Is this correct?
Second thing is that I have DisplayPort cables which were together with my
Dell UltraSharp U2414H
Krzysztof, you should be using 3.13.0-39 patched by me (the newer
version is the vanilla Ubuntu kernel which does not support MST).
Regarding your question about cables: you should not worry about that.
According to [1]:
Despite what you may read, there is no such thing as a
DisplayPort 1.1
I have ATI Radeon HD 7850 graphic card and AMD drivers, so I'm not sure
what it means form me Intel Drivers ?
Another also very important in my current situation is how to downgrade kernel
from current 3.13.0-40 to yours 3.13.0-39 patched ?
Thx!
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I have ATI Radeon HD 7850 graphic card and AMD drivers, so I'm not sure what it
means form me Intel Drivers.
How can I check this ?
Another also very important in my current situation is how to downgrade kernel
from current 3.13.0-40 to yours 3.13.0-39 patched ?
Thx!
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Sorry Krzysztof, this bug is dedicated only to supporting Intel VGAs, so
none of the packages here would solve your problem.
Since you use the proprietary AMD drivers you should examine the
features their driver support and follow their instructions.
Sorry, I have missed the AMD VGA part in the
ok, I will downgrade kernel
sudo apt-get install --reinstall linux-image-3.13.0-39-generic
linux-image-extra-3.13.0-39-generic
sudo update-grub
sudo reboot now
I have right now ATI Catalyst Drivers v.14.9.
Can you give me some advice what special should I search in my ATI drivers?
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Krzysztof, you don't have to downgrade the kernel. This is only
necessary with the open-source Intel drivers.
I'm not sure if AMD drivers support Displayport 1.2 MST feature, but I
know that NVIDIA drivers do support it and it does not require anything
special about the kernel.
Please browse
One thing that I've noticed recently is that I can't unplug and then
plug back into my monitors without a reboot. This also means that I
can't suspend and resume without losing the external monitors. I'm not
sure if this issue belongs in here or elsewhere.
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Ben, are you able to compare this behaviour with the 3.17 kernel (e.g.
from debs available at [1])?
If the behavior is consistent between the two kernel version - it's another
issue.
If 3.17 behaves better than the 3.16 you were using - this is the right place
to handle the problem.
[1]
I've got that in progress. In the meantime, I realized there was a newer
kernel+driver from yours and the xorg-edgers PPAs, so I did that upgrade, and
now unity-control-center only sees one external monitor, with the second being
treated as a mirror of the first. This is using:
3.17 functions almost 100% correct. I'm able to use both external
displays again, and Ubuntu can see them after unplugging/plugging in,
and after suspend/wake. The only issue is that I sometimes have to
disable and re-enable the monitors to get a picture back after plugging
back in or waking back
Dariusz,
In the meantime I asked also AMD team.
They told me that there is missing the MST hub support in one of the latest
kernels.
I got the information that from 3.17 I should have this MST support.
http://forums.amd.com/game/messageview.cfm?catid=474threadid=180336
Can you look at this or
@Ben: if you were using an official Utopic 3.16.0-28-generic kernel,
please note that it does NOT contain support for multiple displays using
MST, so it will not be possible to have non-mirroring displays.
If it is not from the official Utopic repository, please share the
origin of this kernel.
Darius - looks like I was, for some reason. I didn't expect that to be
the case while still having your PPA active, I guess I misunderstand how
that works though.
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I tried to solve also myne problems with displaying for two display port
monitors.
Right now I have connected 3 Dell UltraSharp U2414H LED IPS monitors in serial.
Ubuntu 14.04 LTS
3.13.0-40-generic
I tried run your procedure
Please follow these steps:
1. sudo add-apt-repository -y
I've installed linux-image-3.13.0-39-generic and
linux-image-extra-3.13.0-39-generic, but I dont know how can I switch
my 3 X I have 3 X Dell UltraSharp U2414H LED IPS connected form one Display
Port in serial
graphic_card_out-1monitor_DisplayPort_in/1monitor_DisplayPort_out-
I've installed : linux-image-3.13.0-39-generic and linux-image-
extra-3.13.0-39-generic,
but I dont know how can I switch my 3 X I have 3 X Dell UltraSharp
U2414H LED IPS connected form one Display Port in serial
graphic_card_out-1monitor_DisplayPort_in/1monitor_DisplayPort_out-
I've installed
linux-image-3.13.0-39-generic and linux-image-extra-3.13.0-39-generic,
$ sudo apt-get install linux-image-3.13.0-39-generic
linux-image-extra-3.13.0-39-generic
Czytanie list pakietów... Gotowe
Budowanie drzewa zależności
Odczyt informacji o stanie... Gotowe
Elvis, the only thing I was able to do for you right now is to build you
an Utopic kernel for Trusty (the same that was working for Ben).
Please find it in my ppa. The version number is
3.16.0-26.34~14.04.1hf73386v20141127b1.
Please remember to use also the extras package.
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Hi Ben,
I have uploaded new kernel build (version:
3.16.0-26.34hf73386v20141126b1). Could you please give it a try?
Thanks!
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Title:
Same thing, unfortunately:
[ 37.881345] [ cut here ]
[ 37.881363] WARNING: CPU: 0 PID: 1850 at
/build/buildd/linux-3.16.0/drivers/gpu/drm/i915/intel_ddi.c:850
intel_ddi_pll_select+0x7f/0x3c0 [i915]()
[ 37.881364] Invalid DDI encoder type 11
[ 37.881365] Modules
Ben, according to your logs:
[ 11.322] Current Operating System: Linux dib 3.16.0-25-generic
#33hf73386v20141106b1-Ubuntu SMP Thu Nov 6 14:20:03 UTC 2014 x86_64
you have used the previous kernel again. Maybe you made your attempt
right before the packages were published in my ppa.
Looks like
** Attachment added: dmesg output when trying to set display settings as
desired
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1104230/+attachment/4269008/+files/latest.log
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Sorry about that. 3.16.0-26.34hf73386v20141126b1 is much improved. I'm
able to set modes on my external monitors now, but whether or not they
work is somewhat inconsistent. For example, right now my configuration
is like this: http://people.mozilla.org/~bhearsum/sattap/ae5e1315.png,
but the yellow
One final thing: the display that is on is consistent. When I logged out
of my normal window manager (awesome) and switched to Unity, the yellow
monitor turned on and the green one turned off. Even after logging back
into awesome, this state persisted.
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And here's X logs from around the same time:
[ 520.969] (II) intel(0): resizing framebuffer to 3120x2751
[ 521.017] (II) intel(0): switch to mode 1920x1200@60.0 on DP1-1 using pipe
0, position (1920, 0), rotation left, reflection none
[ 521.420] (II) intel(0): switch to mode 1920x1080@60.0
Apologies for the spam, but I just fixed it. Turns out my video adapter
was only set to 256MB. Changing it to 512MB in the BIOS has all three
monitors working consistently \o/.
Thanks so much Dariusz, it's great to have this set-up going finally!
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I'm glad it works for you Ben.
To everyone: if we want to get this to the Ubuntu kernel we need more
feedback from people testing this.
Please give the Utopic kernel (3.16.0-26.34hf73386v20141126b1) a try and
leave a comment here. This is a big feature and it would help us to have
it tested.
Are there any update for kernel 3.13 on Trusty?
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Title:
DisplayPort 1.2 MST support is missing in the Intel driver
To manage notifications
Elvis, no, sorry, not yet. I was focusing on Utopic as it is the first
step to get it accepted to Ubuntu.
What worries me is that the current build for trusty 3.13 worked for
Wouter (comment #78) and does not work for you. That makes me wonder if
your configuration is even supported by this
Because of work I have no time to upgrade into 14.10 just because of the
kernel 3.16, I think in some point soon 3.16 should be available also
for 14.04 trough the standard repositories channel. 14.10 is kind of new
and I'm aware if will be buggy or not for my particular setup, in the
past I had
Any update here?
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Title:
DisplayPort 1.2 MST support is missing in the Intel driver
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I happened to notice a new xserver-xorg-video-intel package was
published yesterday (2:2.99.916+git20141119.a90cc3b3-0ubuntu0sarvatt). I
tried it and still have the same crash.
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Here's some additional debug logs that David Airline helped me get.
** Attachment added: debug level 6 logs
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1104230/+attachment/4264338/+files/debug6.log
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The Freedesktop bug that I filed got closed, saying my crash is most
likely a bug in the Ubuntu backport.
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Title:
DisplayPort 1.2 MST support is
Thank you Ben, I will review your logs.
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Title:
DisplayPort 1.2 MST support is missing in the Intel driver
To manage notifications about this
I'm on 14.10 with:
* Lenovo T440s (00:02.0 VGA compatible controller: Intel Corporation
Haswell-ULT Integrated Graphics Controller (rev 0b))
* 2 Dell U2413 displays with DP 1.2 enabled.
* Kernel: 3.16.0-25-generic #33hf73386v20141106b1-Ubuntu SMP
* Driver: ii xserver-xorg-video-intel
Hi Dariusz, here is my VGA output from lspci
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Subsystem: Dell Device 054d
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
I was speaking to folks in #intel-gfx, and one of them suggested that I
file a bug on freedesktop.org about my crash. That's
https://bugs.freedesktop.org/show_bug.cgi?id=86475.
** Bug watch added: freedesktop.org Bugzilla #86475
https://bugs.freedesktop.org/show_bug.cgi?id=86475
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I'm very happy to report MST is working with my Dell E5440 laptop and
Dell T-308D docking station.
Kernel: 3.13.0-39.66hf73386v20141030b1
xorg intel driver: 2:2.99.916+git20141105.0532a331-0ubuntu0sarvatt~trusty
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated
Hi Dariusz,
I do not see any 3.13 kernel in you ppa?
Is it the same as the one with the 3.16 release?
I am willing to give it a go,
Kind regards,
Vincent
On Mon, Nov 3, 2014 at 1:35 PM, Dariusz Gadomski 1104...@bugs.launchpad.net
wrote:
** Description changed:
+ SRU Justification:
+
+
Hi Vincent,
There is a 3.13.0-39.66hf73386v20141030b1 version available for trusty. You
should be able to install it with:
sudo add-apt-repository ppa:dgadomski/linux-mst
sudo apt-get update
sudo apt-get install linux-image-3.13.0-39-generic
linux-image-extra-3.13.0-39-generic
And
apt-cache
Hi Dariusz, just tried 3.13 from your ppa including this time the extra
package also and I got the same result as before, my monitors still
appear as a single one in display settings.
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Hello Elvis,
Was it any different for you with the 3.13 kernel?
Thanks,
Dariusz
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Title:
DisplayPort 1.2 MST support is missing in the Intel
** Description changed:
+ SRU Justification:
+
+ Impact: Many users expect the possibility to use the DP1.2 MST feature which
+ enables them to use a number of different display setups: daisy-chaining
+ DP1.2 displays, some 4K displays appearing as 2 separate displays, 3D
displays.
+ This
Hi Dariusz,
Installed 3.16 kernel together with the linux-image-
extra-3.16.0-23-generic package from your source again and this time as
Matthew states the network problem is solved. But in my case it still
doesn't display my two monitors separated on display settings. Remember
I'm still on
Yeah a build with 3.13 will be nicer for me to test, asides the network
issue neither the monitors where shown on display settings.
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Hello everyone,
The last build was successful so there is a trusty kernel
(3.13.0-39.66hf73386v20141030b1) to be tested in my ppa.
I will appreciate your feedback.
Thank you!
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Matthew, did you make any investigation why it was not working for you
on your first laptop?
Please share any observation that may help other people here.
Thanks!
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Mistakenly, the first laptop I tried was an earlier model Dell XPS which
did not support DisplayPort 1.2, it supported version 1.1a and so it did
not support MST (Intel 4000 Graphics, not 5000 as I reported above).
The second laptop which finally worked was the same Dell XPS but was a
newer
Hi Dariusz, just tried the 3.13 kernel build from your ppa and it
didn't leave me without network this time. But still doesn't show me two
separate monitors on display settings. My two U2414H daisy chained are
shown as one single monitor and they display mirrored.
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Thank you Elvis.
Can you please post your output of:
# find /sys/kernel/debug -name i915_dp_mst_info -exec cat {} \;
Have you tried installing the linux-image-extra package for the kernel
you previously tested (3.0.16 - the one that left you without a
network)? If not, I would appreciate
Hi Dariusz,
The command above you request me didn't output nothing for me on the
console, it executes but doesn't show me any results.
I will try when back home to install the linux-image-extra package with
the kernel 3.16 and check if that resolves my network missing problem
under that kernel.
Elvis,
When I was playing around with the new kernel on my Utopic machine, I
had the same problem I first. I noticed the find command would not
output anything unless I also installed the new linux-image-extra
package that was built along side the kernel from Dariusz.
For example for me:
I just double checked, MST support does NOT work unless the updated
linux-image-extra package is installed. If it is not, even with the
updated linux-image package, the displays will remain mirrors of each
other.
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What I was referring above was the output of:
# find /sys/kernel/debug -name i915_dp_mst_info -exec cat {} \;
on my system.
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Title:
DisplayPort
Thank you for the information Matthew.
I didn't notice that because for me without the necessary hardware those
files are empty all the time.
Elvis, did you get any results after installing linux-image-extra?
Thanks!
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Elvis, thank you for checking this. I assume that the multi-display
configuration did not work for you as well as the network?
Have you tried running utopic kernel backport on trusty before? Maybe just this
backport does not work.
Does anybody (with the hardware) have utopic (14.10)
Dariusz,
The results I posted yesterday were from my Utopic machine. In had no
unrelated hardware issues and my network continued to work just fine.
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as i understand this askubuntu answer (
http://askubuntu.com/a/473649/18422 ) the underlying issue
(https://bugs.freedesktop.org/show_bug.cgi?id=72795 ) is the same that
prevents my thinkpad L540 from recognizing 2 monitors on the dock (i on
dock and 1 on laptop-vga works though). i am on current
Matthew, can you please confirm that you don't have 'mirroring'
parameter anywhere on the kernel commandline?
# grep mirror /proc/cmdline
Can you please also post output of:
# find /sys/kernel/debug -name i915_dp_mst_info -exec cat {} \;
Thanks!
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aexl, as long as the docking station uses your intel card via a
displayport 1.2 then this may be the case.
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Title:
DisplayPort 1.2 MST support
Hi Dariusz,
Good news! I tried your kernel on a different laptop with a fresh 14.10
install and everything is working great. The networking is working and
both displays are recognized separately!
I have attached the output of the i915_dp_mst_info files if its still
relevant, but everything
Thanks Matthew!
I will review the changes to trusty and try to backport this feature to
3.13 (to avoid network problems).
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Title:
DisplayPort
Dariusz,
Would you like me to update to 14.10 as well and try the utopic patched
kernel? I want to upgrade soon, anyway.
Or do you need my current 14.04 to test trusty stuff?
Hartelijke groet,
Wouter van der Graaf
Dynora / Plangage
+31 78 843 3139
Op 30 okt. 2014 14:26 schreef Dariusz
Wouter, I would appreciate anyone with a suitable hardware to stay with
trusty for a couple of days more until we have a working solution.
But if you need the MST feature please move to utopic and give a try the
same build Matthew found working.
There is a new 3.13 build for trusty ongoing in my
I also wanted to make sure that everyone is installing the linux-image-
extra-* package, because my wifi does not work without it. Just
installing linux-image-* is not enough.
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That's a good point Matthew. I should have been more clear about it.
Thank you.
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Title:
DisplayPort 1.2 MST support is missing in the Intel
Dariusz,
I tried your kernel + updated intel drivers with a MST Hub connected to
my Dell XPS 13 (Intel® HD graphics 5000).
Both monitors continued to be mirrors of each other, and I could not see
the two monitors in Ubuntu Display's settings or in xrandr.
Distributor ID: Ubuntu
Description:
Thanks Matthew.
All the changes from David's backport for 3.16 branch has been cherry
picked to the kernel in my ppa, so I would appreciate any feedback from
using a build from his sources.
If it works with his version then something in Ubuntu kernel may be
blocking this feature.
If anyone is
Hi Dariusz,
Just tried the installation again and after installing just the kernel
first it leaves me without network.
If you need to know more about my hardware,
I am on a Ubuntu 14.04 fresh installation normally running kernel
3.13.0-39-generic
Laptop: XPS 14 (L421X)
Monitors: 2 X Dell
Hi guys, there is an updated kernel version in my ppa (should become available
any minute):
* trusty: 3.16.0-23.31~14.04.2hf73386v20141028b1
* utopic: 3.16.0-23.31hf73386v20141028b1
I would really appreciate giving any of those a try. The procedure
should be as previously:
1. install the
Hi Dariusz,
I tried your changes and don't seem to be able to see the my other
monitors any more. I'm curious if this has something to do with the dock
I'm using to connect my laptop to my displays, though, because the
external mouse and keyboard I have hooked up to the dock don't seem to
be
Thanks Mike. If your docking station is the same as Elvis mentioned
above then this feature should (eventually) make it working.
Can you please double-check:
$ apt-cache policy linux-image-3.16.0-23-generic
whether the installed version you use is:
Installed:
Hello Elvis,
I have came across something that may interest you, here [1]. The Dell
support person there states that you should have the DSP 1.2 enabled
only on the primary monitor, on the secondary it should be disabled.
[1] http://en.community.dell.com/support-
Thanks Dariusz,
So yes, I founded that thread too and cleared my doubts about it. I had
my monitors configuration that way while testing the patched kernels
mentioned here.
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Hi Dariusz,
I have a Dell XPS 12-9Q33 and two U2414Hb Dell displays, all DP 1.2 MST
compatible.
Using your instructions, I installed the new kernel and intel driver.
Daisy chaining the two displays to my laptop DOES NOT work. With this
kernel no external display works anymore.
Moreover, my
Thank you guys for testing this. Unfortunately I do not know the cause
with the wireless network problems. I was doing sanity tests of those
kernels on my trusty desktop (with a USB WiFi dongle) and my utopic
laptop (with built-in wifi). In both cases I was able to use my network.
This kernel is
Hi Dariusz,
Some info, the output of the command you asked for:
*vincent@vincent-Latitude-E7440:~$ apt-cache policy
xserver-xorg-video-intel*
*xserver-xorg-video-intel:*
* Installed: 2:2.99.916+git20141016.6b98f162-0ubuntu0sarvatt~trusty*
* Candidate:
Thanks Vincent. This confirm that probably what I have backported is not
enough to have full MST support. I will try to prepare an updated build
after reviewing David Airlie tree.
I will work on providing an update next week.
Thank you all for testing.
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Hi Vincent,
If I understand correctly your docking station performs the role of a dp
mst hub (can you please confirm this with the documentation of your
docking station or provide its model to verify this online?), so it
should be a good setup to test.
Ideally to make this working you would need
Hi Elvis,
Looks like you have the perfect setup to test this case.
Please make sure you have ppa-purge installed so you can revert the
package updates if anything goes wrong.
Please follow these steps:
1. sudo add-apt-repository -y ppa:dgadomski/linux-mst
2. sudo add-apt-repository -y
Hi Dariusz,
I think I have this part:
Manufacturer Part# : XX6F0 | Dell Part# : 331-6307
I am not sure if that is a DP hub, it is beyond my knowledge.
I used your kernel and the xserver-xorg-video intel driver from URI was:
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