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#1 2015-09-29 21:32:29

alex.forencich
Member
Registered: 2011-05-29
Posts: 96

Display flickers after resume from standby on kernel 4.2 (i915)

Not much to say.  My display flickers periodically (varies from once every couple of seconds to large bursts of several in one second) after resuming from standby.  Only seems to affect kernel 4.2.  Not a problem in current LTS package (4.1.8). 

I am using the i915 driver, though I have an nvidia card available through bumblebee.  I am running this on a Dell XPS 15 touch. 

It looks like this could possibly be related to https://bugs.freedesktop.org/show_bug.cgi?id=91393 .

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#2 2015-09-30 14:42:40

spacepluk
Member
Registered: 2014-07-24
Posts: 8

Re: Display flickers after resume from standby on kernel 4.2 (i915)

I'm having the same issue, the kernel on testing seems to work slightly better on my system but is still broken.

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#3 2015-10-23 14:34:09

spacepluk
Member
Registered: 2014-07-24
Posts: 8

Re: Display flickers after resume from standby on kernel 4.2 (i915)

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#4 2015-10-23 14:35:25

spacepluk
Member
Registered: 2014-07-24
Posts: 8

Re: Display flickers after resume from standby on kernel 4.2 (i915)

Here's a PKGBUILD that reverts those patches.

https://gist.github.com/spacepluk/e15cf99bb881ea56098b

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#5 2015-11-05 04:40:00

alex.forencich
Member
Registered: 2011-05-29
Posts: 96

Re: Display flickers after resume from standby on kernel 4.2 (i915)

Just opened a bug report here: https://bugs.archlinux.org/task/46975

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#6 2016-03-10 20:56:28

alex.forencich
Member
Registered: 2011-05-29
Posts: 96

Re: Display flickers after resume from standby on kernel 4.2 (i915)

Bug still present in linux 4.4.5-1. linux-lts 4.1.19-1 still unaffected.

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#7 2016-04-25 01:01:33

alex.forencich
Member
Registered: 2011-05-29
Posts: 96

Re: Display flickers after resume from standby on kernel 4.2 (i915)

Dammit.   This exceptionally annoying regression has made it into the current LTS kernel.  ARE YOU FREAKING KIDDING ME????????

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#8 2016-04-25 04:38:38

alex.forencich
Member
Registered: 2011-05-29
Posts: 96

Re: Display flickers after resume from standby on kernel 4.2 (i915)

Downgraded to linux-lts 4.1.21-1 (latest version of linux-lts that does not contain the regression) and added to ignorepkg until this gets fixed either upstream or in the arch packages.

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#9 2016-04-25 16:59:19

johnnynyquist
Member
Registered: 2016-01-25
Posts: 27

Re: Display flickers after resume from standby on kernel 4.2 (i915)

+1 for this- downgrading solved my problem. thanks for giving me the impetus to learn how to downgrade my kernel- and also assurance that it wasn't just me having i915 issues.

For users with 10 minutes less knowledge than me-- go to `/var/cache/pacman/pkg`, find the last-known-good kernel, and `pacman -U` that baby. All there is to it! Your bootloader should get updated automatically.  Then to prevent later updates from upgrading the kernel, add an entry to `/etc/pacman.conf` on the `IgnorePkg` line (space-separated).

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#10 2016-04-25 17:09:56

alex.forencich
Member
Registered: 2011-05-29
Posts: 96

Re: Display flickers after resume from standby on kernel 4.2 (i915)

If it's not in your /var/cache/pacman folder, then you can download it from https://archive.archlinux.org/packages/ and install it with pacman -U.  Don't forget to keep the versions of linux-lts and linux-lts-headers the same, if you have linux-lts-headers installed!

Also, if you are having this issue, go vote/post on both of these:

https://bugs.archlinux.org/task/46975
https://bugs.freedesktop.org/show_bug.cgi?id=91393

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#11 2016-06-11 22:25:57

alex.forencich
Member
Registered: 2011-05-29
Posts: 96

Re: Display flickers after resume from standby on kernel 4.2 (i915)

Regression still not fixed as of 4.6.2.

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#12 2016-06-13 16:39:13

Shawn8901
Member
Registered: 2013-05-07
Posts: 38

Re: Display flickers after resume from standby on kernel 4.2 (i915)

Hi,
I have a similar flickering described above.

Happend which the upgrade from kernel 4.5.4-1 to 4.6.2-1.
The Downgrade solved the issue for me.

Is there another workaround then downgrade?

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#13 2016-06-13 18:55:19

alex.forencich
Member
Registered: 2011-05-29
Posts: 96

Re: Display flickers after resume from standby on kernel 4.2 (i915)

Make noise here and post logs: https://bugs.freedesktop.org/show_bug.cgi?id=91393

Only solutions are either downgrade and wait until the devs get around to fixing the regression, or recompile the linux kernel from source with the commits that caused the regression backed out.

Last edited by alex.forencich (2016-06-13 19:50:30)

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#14 2016-06-13 19:49:12

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 19,740

Re: Display flickers after resume from standby on kernel 4.2 (i915)

alex.forencich wrote:

Make noise here and post logs: https://bugs.freedesktop.org/show_bug.cgi?id=91393

Only solutions are either downgrade and wait until the devs get their ...

https://wiki.archlinux.org/index.php/Co … d_projects


Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

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#15 2016-06-13 19:55:02

alex.forencich
Member
Registered: 2011-05-29
Posts: 96

Re: Display flickers after resume from standby on kernel 4.2 (i915)

Sorry about that; I have run out of patience on this issue as upstream broke it quite some time ago and seems to have no interest in even interim fixes such as backing out the four commits that are known to be the cause of the issue.  The regression has made it into the LTS kernel.  LTS stands for long term SUPPORT, but it seems that upstream has little interest in supporting their own code.

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#16 2016-06-13 19:58:01

ewaller
Administrator
From: Pasadena, CA
Registered: 2009-07-13
Posts: 19,740

Re: Display flickers after resume from standby on kernel 4.2 (i915)

I understand.  And, I agree with everything you said up to and after the gaffe at the developers. I mostly wanted to keep the thread on the rails. 
Take care


Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

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