Public bug reported:
My wifi used to be solid, but recently it's started dropping out 2-3
times a day. Looking in the logs the only thing I see that may be
relevant is:
Jun 07 11:57:07 laptop kernel: brcmfmac: brcmf_msgbuf_query_dcmd: Timeout on
response for query command
Jun 07 11:57:07 laptop
Hey Tim, yes I already did that
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1559308
Just included the results here for completeness.
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Phew! Just done all 48 of these tests...
Tests:
1. GDM starts
2. Lightdm starts
3. Can launch Gnome
4. Can launch Gnome Classic
5. External monitor with Lightdm
6. External monitor with Gdm
7. External monitor with Gnome
8. External monitor with Gnome Classic
Results: . is fine, E is error
Attempt to re-do formatting...
---
Config Driver Prime 12345678
---
c1 361.42-0ubuntu2 intel EF.F
c2 361.42-0ubuntu2 nvidia FFFF
c3
Attempt to re-do formatting AGAIN!
---
Config_Driver__Prime___12345678
---
c1_361.42-0ubuntu2_intel___EF.F
c2_361.42-0ubuntu2_nvidia__FFFF
Still have this problem while running 364.19 Tue Apr 19 14:15:03 PDT
2016
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https://bugs.launchpad.net/bugs/1559576
Title:
Ubuntu GNOME boots to black screen when using
Try using lightdm to launch it? That's the combination I'm using.
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https://bugs.launchpad.net/bugs/1568865
Title:
[drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]]
Note: I can use Gnome Classic, with a monitor plugged in, on the Intel
drivers without this error.
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https://bugs.launchpad.net/bugs/1568865
Title:
Ah, my bad. I think actually it's that the usb stick uses nouveau not
intel.
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https://bugs.launchpad.net/bugs/1568865
Title:
[drm:intel_cpu_fifo_underrun_irq_handler
Sorry, missed the part about marking it "confirmed". Have done that now.
Also, more data for you: I've noted that while booting from a USB stick,
if I boot using UEFI then this occurs, but if I boot in legacy bios mode
then I can plug in a monitor without any issues.
** Changed in: linux
Thanks.
So I've never run anything before Ubuntu 16.04 on this laptop, so no,
it's not an upgrade that's broken it.
I installed linux-image-4.6.0-040600rc4-generic, ran Gnome-Shell and
plugged in the external monitor, while watching syslog.
Saw the same error about fifo underrun before the
Public bug reported:
Running Gnome-Shell on ubuntu 16.04 on my Dell XPS 15 9550 laptop using
Intel graphics (Nvidia card turned off), I get this error in syslog when
plugging in an external monitor (HDMI).
Apr 11 14:28:38 miaco kernel: [ 2616.604641]
[drm:intel_cpu_fifo_underrun_irq_handler
Well this is embarrassing. So not only does the last one you made work,
but I re-tested the stock kernels and they now work as well:
Linux reech 3.2.0-57-generic #87-Ubuntu SMP Tue Nov 12 21:35:10 UTC 2013 x86_64
x86_64 x86_64 GNU/Linux
Linux reech 3.2.0-56-generic #86-Ubuntu SMP Wed Oct 23
Working with: Linux reech 3.2.0-56-generic #86~lp1255022Commit99a1224
SMP Mon Dec 2 18:06:59 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
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https://bugs.launchpad.net/bugs/1255022
Works with: Linux reech 3.2.0-56-generic #86~lp1255022Commitf418e2b SMP
Tue Dec 3 18:59:33 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
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https://bugs.launchpad.net/bugs/1255022
Working with Linux reech 3.2.0-56-generic #86~lp1255022Commitae6f307 SMP
Tue Dec 3 20:16:27 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
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https://bugs.launchpad.net/bugs/1255022
That said, using that kernel, I've had times when it's locked up -
acting like I have no network connection but not saying disconnected.
turning wifi off and on again (via network manager) brought it back
again. Couuld be coincidence, but never needed to do this before.
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Wifi works with that one: Linux reech 3.2.0-56-generic
#86~lp1255022Commitc1bb8de SMP Wed Nov 27 17:43:16 UTC 2013 x86_64
x86_64 x86_64 GNU/Linux
Thanks.
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Public bug reported:
After an upgrade to the linux-image-3.2.0-56-generic kernel on Ubuntu
12.04.3 LTS, my laptop had no wifi. No lights, nothing in network
manager to even acknowledge the existance of a wireless capability.
On rebooting into the previous kernel linux-image-3.2.0-55-generic it
Tried those both:
Linux 3.2.0-57-virtual #87-Ubuntu SMP Tue Nov 12 21:53:49 UTC 2013 x86_64
x86_64 x86_64 GNU/Linux
Linux 3.2.0-57-generic #87-Ubuntu SMP Tue Nov 12 21:35:10 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux
And neither worked.
Back on -55 now in order to submit this report
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You
Installed linux-crashdump. Test with AltGr+SysRq+C. Crashes. Hangs with
no disk activity 5+minutes. Does not reboot. Nothing in /var/crash,
nothing apparently unusual in /var/log/kern.log I'll assume that linux-
crashdump is crashing and ignore that - install linux-crashdump-
crashdump? ;-)
Next
In case it's helpful, here's a screenshot of the panic from
/var/log/syslog (never gets written to disk), after doing a test crash
as explained at
https://wiki.ubuntu.com/Kernel/CrashdumpRecipe?action=showredirect=KernelTeam%2FCrashdumpRecipe
(n.b. as instructed, I've stripped back the APPEND
I can confirm it still happens with the latest BIOS.
** Changed in: linux (Ubuntu)
Status: Invalid = Confirmed
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https://bugs.launchpad.net/bugs/1132046
Title:
$ sudo dmidecode -s bios-version sudo dmidecode -s bios-release-date
V1.20
03/16/2012
** Changed in: linux (Ubuntu)
Status: Expired = Confirmed
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OK, still get hangs after the BIOS update :-(
They mostly happen when running on battery, but had one lock up last
week on AC power too. Currently on Ubuntu 12.04
Linux reech 3.2.0-53-generic #81-Ubuntu SMP Thu Aug 22 21:01:03 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux
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Am trying new BIOS update. Thanks to a
href=http://www.linuxinsight.com/how-to-flash-motherboard-bios-from-
linux-no-dos-windows-no-floppy-drive.html these instructions/a for
how to do this.
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