[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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[Expired for linux (Ubuntu Yakkety) because there has been no activity
for 60 days.]
** Changed in: linux (Ubuntu Yakkety)
Status: Incomplete => Expired
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Does this bug still happen on Yakkety with the latest updates?
** Changed in: linux (Ubuntu Yakkety)
Status: Triaged => Incomplete
** Changed in: linux (Ubuntu)
Status: Triaged => Incomplete
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** Tags removed: kernel-key
** Tags added: kernel-da-key
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https://bugs.launchpad.net/bugs/1643622
Title:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A
FIFO
(sorry to many i's - its late :-))
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Title:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A
FIFO underrun
To manage
Hi Iilija
I don't use a docking station, but I was seeing occasion blanking of the
screen with an external monitor plugged into the display port.
Running with the proposed 4.8 kernel from the kernel team PPA has
appeared to resolve the issue - I've not see the original drm kernel
error message,
James,
Can you please clarify running OK. For me everything runs okay if I use
the main display on the laptop or connect a monitor to the DisplayPort
port. However, I get the error messages when I connect the external
docking station (Thinkpad Onelink+). As per my post, the error message
was
Running OK so far with the kernel team PPA and the proposed 4.8 kernel
updates.
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Title:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
Hey folks ...
I am putting my two cents that I am seeing the same error message with
the following setup:
- Lenovo X1 Yoga
- Intel HD520 Graphics
- Onelink+ docking station with two Displayport connected monitors
- Ubuntu 16.04
- Tested with following mainline PPA kernels (4.4.x, 4.6.x, 4.7.x,
OK I'll try that with the kernel team PPA as well.
I had to drop the mainline kernel - no zfs which blocked me on some
other work.
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Title:
It would also be good to test the HWE kernel posted in comment #2 of bug
1643566
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Title:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]]
Re reference to bug 1643566 - I've not been using my x260 that much with
the built-in screen yet (its new) - I've only seen the issue with the
external monitor.
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Tried with the mainline kernel:
[4.124634] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
CPU pipe B FIFO underrun
on pipe B this time but looks the same - I'll run with the mainline and
see if I still get the same screen blanks.
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This might be related to bug 1643566. There were some Skylake fixes in
upstream v4.9.
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.9 kernel[0].
If this bug is fixed in the mainline kernel,
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