[Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

[Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

[Arno]

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My laptop (core m5-6y54) starts flickering after returning from Suspend
(to RAM) or other commands touching the video driver (xrandr, powertop
--calibrate, ...)

 From kernel (tested with up to 5.7) I get the message:

[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun

I added a bug with more details here:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872760

but guys from Ubuntu seems not able to help (as it is an upstream bug) !?

This happend not in older kernels, but these have the problem not to go
in power save states. So I think the fix of that

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863489

causes this regression.

Hope someone can help. For a  laptop it is better to have both - standby
and power saving. Thank you.

Arno



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Re: [Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

[Arno]

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Is there another place to report this kind of issue? Didn't get any
feedback. Did I make mistakes in my mail? I already tried the Ubuntu
bug-tracker (see below) with no success.

Thank you,

Arno


Am 11.05.20 um 10:18 schrieb Arno:
>
> My laptop (core m5-6y54) starts flickering after returning from
> Suspend (to RAM) or other commands touching the video driver (xrandr,
> powertop --calibrate, ...)
>
> From kernel (tested with up to 5.7) I get the message:
>
> [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A
> FIFO underrun
>
> I added a bug with more details here:
>
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872760
>
> but guys from Ubuntu seems not able to help (as it is an upstream bug) !?
>
> This happend not in older kernels, but these have the problem not to
> go in power save states. So I think the fix of that
>
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863489
>
> causes this regression.
>
> Hope someone can help. For a  laptop it is better to have both -
> standby and power saving. Thank you.
>
> Arno
>
>
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx

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Re: [Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

[Saarinen, Jani]

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Please make gitlab issue if not already done. Lakshmi, please guide.

From: Intel-gfx <intel-gfx-bounces@lists.freedesktop.org> On Behalf Of Arno
Sent: maanantai 18. toukokuuta 2020 10.07
To: intel-gfx@lists.freedesktop.org; chris@chris-wilson.co.uk
Subject: Re: [Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun


Is there another place to report this kind of issue? Didn't get any feedback. Did I make mistakes in my mail? I already tried the Ubuntu bug-tracker (see below) with no success.

Thank you,

Arno


Am 11.05.20 um 10:18 schrieb Arno:

My laptop (core m5-6y54) starts flickering after returning from Suspend (to RAM) or other commands touching the video driver (xrandr, powertop --calibrate, ...)

From kernel (tested with up to 5.7) I get the message:

[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

I added a bug with more details here:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872760

but guys from Ubuntu seems not able to help (as it is an upstream bug) !?

This happend not in older kernels, but these have the problem not to go in power save states. So I think the fix of that

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863489

causes this regression.

Hope someone can help. For a  laptop it is better to have both - standby and power saving. Thank you.

Arno





_______________________________________________

Intel-gfx mailing list

Intel-gfx@lists.freedesktop.org<mailto:Intel-gfx@lists.freedesktop.org>

https://lists.freedesktop.org/mailman/listinfo/intel-gfx

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Re: [Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

[Vudum, Lakshminarayana]

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Arno, I have created bug https://gitlab.freedesktop.org/drm/intel/-/issues/1900 for this issue.
Now discussions can happen in the bug report directly. Thanks for reporting the issue.

Thanks,
Lakshmi.
From: Saarinen, Jani <jani.saarinen@intel.com>
Sent: Monday, May 18, 2020 10:21 AM
To: Arno <star@gmx.li>; intel-gfx@lists.freedesktop.org; chris@chris-wilson.co.uk; Vudum, Lakshminarayana <lakshminarayana.vudum@intel.com>
Subject: RE: [Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

Please make gitlab issue if not already done. Lakshmi, please guide.

From: Intel-gfx <intel-gfx-bounces@lists.freedesktop.org<mailto:intel-gfx-bounces@lists.freedesktop.org>> On Behalf Of Arno
Sent: maanantai 18. toukokuuta 2020 10.07
To: intel-gfx@lists.freedesktop.org<mailto:intel-gfx@lists.freedesktop.org>; chris@chris-wilson.co.uk<mailto:chris@chris-wilson.co.uk>
Subject: Re: [Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun


Is there another place to report this kind of issue? Didn't get any feedback. Did I make mistakes in my mail? I already tried the Ubuntu bug-tracker (see below) with no success.

Thank you,

Arno


Am 11.05.20 um 10:18 schrieb Arno:

My laptop (core m5-6y54) starts flickering after returning from Suspend (to RAM) or other commands touching the video driver (xrandr, powertop --calibrate, ...)

From kernel (tested with up to 5.7) I get the message:

[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

I added a bug with more details here:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872760

but guys from Ubuntu seems not able to help (as it is an upstream bug) !?

This happend not in older kernels, but these have the problem not to go in power save states. So I think the fix of that

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863489

causes this regression.

Hope someone can help. For a  laptop it is better to have both - standby and power saving. Thank you.

Arno




_______________________________________________

Intel-gfx mailing list

Intel-gfx@lists.freedesktop.org<mailto:Intel-gfx@lists.freedesktop.org>

https://lists.freedesktop.org/mailman/listinfo/intel-gfx
---------------------------------------------------------------------
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Registered Address: PL 281, 00181 Helsinki 
Business Identity Code: 0357606 - 4 
Domiciled in Helsinki 

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
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Re: [Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun

[Arno]

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Dear Lakshminarayana, dear Chris, dear Jani,

thanks for opening this bug, but it seems nothing to happen with that.
Can I do anything to trigger this and bring that back to focus. It is an
really annoying bug and this flickering screen drives me crazy and with
"intel_idle.max_cstate=4" runtime is dramatically reduced.

 From what I read maybe you Chris have biggest knowledge. Can you give
me some feedback? Shall I give up hope?

Best regards,

Arno


On 18.05.20 09:43, Vudum, Lakshminarayana wrote:
>
> Arno, I have created bug
> https://gitlab.freedesktop.org/drm/intel/-/issues/1900
> <https://gitlab.freedesktop.org/drm/intel/-/issues/1900> for this issue.
>
> Now discussions can happen in the bug report directly. Thanks for
> reporting the issue.
>
> Thanks,
>
> Lakshmi.
>
> *From:* Saarinen, Jani <jani.saarinen@intel.com>
> *Sent:* Monday, May 18, 2020 10:21 AM
> *To:* Arno <star@gmx.li>; intel-gfx@lists.freedesktop.org;
> chris@chris-wilson.co.uk; Vudum, Lakshminarayana
> <lakshminarayana.vudum@intel.com>
> *Subject:* RE: [Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]]
> *ERROR* CPU pipe A FIFO underrun
>
> Please make gitlab issue if not already done. Lakshmi, please guide.
>
> *From:* Intel-gfx <intel-gfx-bounces@lists.freedesktop.org
> <mailto:intel-gfx-bounces@lists.freedesktop.org>> *On Behalf Of *Arno
> *Sent:* maanantai 18. toukokuuta 2020 10.07
> *To:* intel-gfx@lists.freedesktop.org
> <mailto:intel-gfx@lists.freedesktop.org>; chris@chris-wilson.co.uk
> <mailto:chris@chris-wilson.co.uk>
> *Subject:* Re: [Intel-gfx] intel_cpu_fifo_underrun_irq_handler [i915]]
> *ERROR* CPU pipe A FIFO underrun
>
> Is there another place to report this kind of issue? Didn't get any
> feedback. Did I make mistakes in my mail? I already tried the Ubuntu
> bug-tracker (see below) with no success.
>
> Thank you,
>
> Arno
>
> Am 11.05.20 um 10:18 schrieb Arno:
>
>     My laptop (core m5-6y54) starts flickering after returning from
>     Suspend (to RAM) or other commands touching the video driver
>     (xrandr, powertop --calibrate, ...)
>
>     From kernel (tested with up to 5.7) I get the message:
>
>     [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe
>     A FIFO underrun
>
>     I added a bug with more details here:
>
>     https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1872760
>
>     but guys from Ubuntu seems not able to help (as it is an upstream
>     bug) !?
>
>     This happend not in older kernels, but these have the problem not
>     to go in power save states. So I think the fix of that
>
>     https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1863489
>
>     causes this regression.
>
>     Hope someone can help. For a  laptop it is better to have both -
>     standby and power saving. Thank you.
>
>     Arno
>
>     _______________________________________________
>
>     Intel-gfx mailing list
>
>     Intel-gfx@lists.freedesktop.org
>     <mailto:Intel-gfx@lists.freedesktop.org>
>
>     https://lists.freedesktop.org/mailman/listinfo/intel-gfx
>
> ---------------------------------------------------------------------
> Intel Finland Oy
> Registered Address: PL 281, 00181 Helsinki
> Business Identity Code: 0357606 - 4
> Domiciled in Helsinki
>
> This e-mail and any attachments may contain confidential material for
> the sole use of the intended recipient(s). Any review or distribution
> by others is strictly prohibited. If you are not the intended
> recipient, please contact the sender and delete all copies.
>

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