*** This bug is a duplicate of bug 1554613 ***
https://bugs.launchpad.net/bugs/1554613
i read #1554613 by now and think this bug is a dublicate
** This bug has been marked a duplicate of bug 1554613
screen flickering on XPS13 9350
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UPDATE:
since I am using Kernel 4.4.0-10#25 the bug is gone.
Saturday I am going to bisect into the problem.
How do I report the broken commit? do I just paste the commit id?
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Hi Thomas, i think you are right.
i build kernel 4.4.0-10 and running it right now. if the bug did not
appear by end of day i will try bisec up to 4.4.0-16 wich does not
worked for me.
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This is the exact same hardware and flickering as in LP: #1554613
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https://bugs.launchpad.net/bugs/1561729
Title:
[drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]]
just booted from the xenial daily stick which I used for installation.
with kernel 4.4.0.10 the problem did not occur. i am not sure how i can
reinstall that specific kernel version.
i would like to give the kernel a try before bisecting to problem.
the data within the gist I grabbed from the
Joseph,
Earlier versions of Xenial, doesn't have this problem.
Maybe with previous XOrg / Linux 4.3 combo... And also, maybe two or
three Google Chrome previous versions?
I think that it would be a good idea to give it a try, maybe a Xenial
alpha.
Best!
Thiago
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Did this issue start happening after an update/upgrade? Was there a
kernel version where you were not having this particular problem? This
will help determine if the problem you are seeing is the result of a
regression, and when this regression was introduced. If this is a
regression, we can
hey, i just tested kernel 4.6rc1 and i am still have the bug. :(
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Title:
[drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]]
i recorded the flickering that happens every now and then. between
seconds and minutes.
https://www.youtube.com/watch?v=Ox8O8EJiWGg
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the bug still apears with kernel 4.5
** Attachment added: "dmesg output with upstream kernel"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1561729/+attachment/4616032/+files/dmesg.kernel4.5.log
** Tags added: kernel-bug-exists-upstream
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Hi Joseph,
i am installing upstream kernel right now, give me a few hours with it
to check if the problem persists.
cheers,
daniel
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However, I'm not seeing any DRM errors on dmesg / kern.log.
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https://bugs.launchpad.net/bugs/1561729
Title:
[drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]] *ERROR*
Hey!
I'm also facing this problem, I recorded a video about it:
https://www.youtube.com/watch?v=l21WsKz3fZc
I tried to move away from XOrg, by using GNOME+Wayland, but, problem
persist, Wayland is faster, however, I can still see it flickering
(faster).
Problem with GNOME+Wayland is that it
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.5 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
00:02.0 VGA compatible controller [0300]: Intel Corporation Sky Lake Integrated
Graphics [8086:1916] (rev 07) (prog-if 00 [VGA controller])
DeviceName: Onboard IGD
Subsystem: Dell Skylake Integrated Graphics [1028:0704]
Flags: bus master, fast devsel, latency 0, IRQ 282
ADDITION:
This happens randomly, sometimes i can work for hours, sometimes it flickers
just after login.
I am not sure what the trigger condition is.
** Summary changed:
- Screen flickering on i915_bpo
+ [drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]] *ERROR* CPU pipe A FIFO
underrun
**
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