*** This bug is a duplicate of bug 1550779 ***
https://bugs.launchpad.net/bugs/1550779
** Tags added: cscc
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https://bugs.launchpad.net/bugs/1568865
Title:
*** This bug is a duplicate of bug 1550779 ***
https://bugs.launchpad.net/bugs/1550779
** This bug has been marked a duplicate of bug 1550779
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
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I see the same behavior after upgrading from 16.10 to 17.10.
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
This happens very often (not always) after the computer turn off the screen due
to inactivity.
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Turn on the laptop whit/whitout VGA external conected, connected and
then wait to blank screen or simple close your laptop.
I get a blank screen and the follow log:
Jun 19 07:01:03 oemunoz kernel: [ 753.076621]
[drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo
Happened here for the first time - Dell E7470, Intel CPU+GPU, no other
card.
Ubuntu 16.04 (KDE neon User Edition 5.9)
4.4.0-64-lowlatency #85-Ubuntu SMP PREEMPT Mon Feb 20 12:39:25 UTC 2017 x86_64
x86_64 x86_64 GNU/Linux
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I have a Lenovo T460P with Nvidia Geforce 940M, same issue on wake up
from suspend. I7-6700HQ 2.60GHz, 16.04 x64, kernel 4.4.0-53-generic.
Running Nvidia driver 367.57 (open source).
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I have an Asus X555UB laptop with Geforce 940M active and this error
happens with me when I try to wake up from suspend mode.
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Title:
Kernel 4.4.11 (from http://kernel.ubuntu.com/~kernel-ppa/mainline/)
seems to work with the Nouveau driver, without a freeze. (have only
tested for a short period of time thus far).
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Using the 4.6.0 kernel, and NVidia driver (rather than Nouveau) I can
plug in HDMI monitor and not freeze. (my previous post reporting a
freeze with 4.6 kernel was using Nouveau driver).
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Actually I just tried the 4.6 kernel that was officially released 2 days
ago, and I still get a freeze when attaching monitor to HDMI.However
the symptoms are different.
The external monitor does get the desktop drawn on it, and I can move
the mouse around, and between the monitors. But the
Backports of these fixes to 4.4 kernels are badly needed. This bug
affects (prevents use of HDMI port) anyone who has one of several newer
generations Dell laptop models who is trying to run most any linux
distribution using 4.4 kernels (such as Ubuntu 16.04). These XPS models
are selling fast,
I've now tried this with 4.6.0-rc7.
* I no longer see the "CPU pipe B FIFO underrun" errors in syslog,
although I do still see the stack traces like in #12 on hotplugging
displays.
* The "laptop screen goes black when mouse moves into it" issue is gone!
It looks like there are quite a few
@shinyblue (and others) would you be able to try the 4.6.0-rc6 kernel?
It looks like some new commits relating to i915 have been made since
4.6.0-rc4:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/log/?id=refs/tags/v4.6-rc6=300
drm/i915: Use fw_domains_put_with_fifo() on HSW
I see the same FIFO under-run issue in Kubuntu 16.04. The manifestation
appears to be either the laptop display remaining totally blank (but not
disabled - the pointer appears to travel through it) on boot-up, resume
from lid-open or resume from screensaver, or the display going blank
when the
FWIW I still have this issue without Unity and Compiz running, so I
don't think it has anything to do with those. I don't see any relevant
logging from X even after starting it with -logverbose 6.
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This is also with the latest bios update (A07) from Dell.
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Title:
[drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]] *ERROR* CPU
Assuming this is what's responsible for the issue, to me this is quite a
major bug as it prevents use of external display together with the
laptop screen.
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I am also seeing this, with a fresh install of 16.04 on a new Dell
Precision 5510 (also Skylake, similar to the XPS 15 9550).
When I plug in an external monitor I see this error in syslog:
May 4 12:13:01 cherry kernel: [ 1362.648527] [ cut here
]
May 4 12:13:01 cherry
Hello,
DELL XPS 13 - 9350
Manufacture Date 02/02/2016
Ubuntu 16.04 LTS
No external monitors
Also see the problem ;
kernel: [drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]]
*ERROR* CPU pipe A FIFO underrun
Humble Query = Is this because i915 driver is not mature enough to
Try using lightdm to launch it? That's the combination I'm using.
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Title:
[drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]]
With Gnome Classic, when I plug in a monitor I get two blank screens and
a hang (rather than flickering screens then a hang) - only tried this
once.
Also for clarification I'm using the official 16.04 release of ubuntu
gnome. 4.4.0-21 kernel.
I have not tried with Unity (on 16.04) but it hung
Note: I can use Gnome Classic, with a monitor plugged in, on the Intel
drivers without this error.
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Title:
Just noting that I have the very same problems - on the same laptop
model.
[drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]] *ERROR* CPU pipe B
FIFO underrun
(I also got the flickering screen followed by lock-up with Ubuntu 15.10 (and
older kernel) though I don't know if it was the same
Ah, my bad. I think actually it's that the usb stick uses nouveau not
intel.
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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
Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.6
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