[Bug 201067] New: [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

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bugzilla-daemon＠bugzilla.kernel.org

9 Sep 2018 9 Sep '18

5:06 p.m.

https://bugzilla.kernel.org/show_bug.cgi?id=201067

Bug ID: 201067 Summary: [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2 Product: Drivers Version: 2.5 Kernel Version: 4.19-rc2 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: sarnex@gentoo.org Regression: No

Created attachment 278389 --> https://bugzilla.kernel.org/attachment.cgi?id=278389&action=edit dmesg

Hi all,

When using a kernel after the below commit, I get visual corruption only on the right most vertical column of my screen:

Author: Nicholas Kazlauskas nicholas.kazlauskas@amd.com Date: Mon Jul 23 14:13:23 2018 -0400

drm/amd/display: Use calculated disp_clk_khz value for dce110

Video: https://www.youtube.com/watch?v=HrJUrBWMRXU

Using a kernel without this commit does not have the issue.

My GPU is a Sapphire Nitro+ Vega 64. I am using Gentoo with Mesa git and KDE Plasma 5.

My main monitor is connected over DP and runs at 2560x1440 at 144hz. My second monitor is connected over HDMI and runs at 1920x1080 at 60hz. I tried disabling the second monitor in KDE, but the issue still occurs.

It also occurs in fullscreen applications.

I will also attach dmesg.

I can test any patches or answer any questions.

Thanks, Sarnex

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bugzilla-daemon＠bugzilla.kernel.org

9 Sep 9 Sep

5:09 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

Nick Sarnie (sarnex@gentoo.org) changed:

What |Removed |Added ---------------------------------------------------------------------------- Regression|No |Yes

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bugzilla-daemon＠bugzilla.kernel.org

10 Sep 10 Sep

4:43 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #1 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) --- Created attachment 278423 --> https://bugzilla.kernel.org/attachment.cgi?id=278423&action=edit Patch that reverts the 15% reduction in set dispclk

While I can't reproduce your issue under a similar setup I think I have an idea of what the issue is.

Can you try this patch?

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bugzilla-daemon＠bugzilla.kernel.org

11:05 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #2 from Nick Sarnie (sarnex@gentoo.org) --- Hi Nicholas,

Thank you for the fast response.

I can confirm the patch fixes the issue.

If you intend to submit this: Tested-by: Nick Sarnie sarnex@gentoo.org

Thanks, Sarnex

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bugzilla-daemon＠bugzilla.kernel.org

11 Sep 11 Sep

5:47 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) changed:

--- Comment #3 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) --- Created attachment 278455 --> https://bugzilla.kernel.org/attachment.cgi?id=278455&action=edit 0001-drm-amd-display-Use-higher-dispclk-value-for-dce120.patch

Do you mind testing another patch?

This patch has a narrower impact than the previous one (since it should only target Vega). I imagine that it would also fix your issue but it'd be nice to have verification.

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bugzilla-daemon＠bugzilla.kernel.org

10:27 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #4 from Nick Sarnie (sarnex@gentoo.org) --- Hi Nicholas,

I can also confirm that the second patch fixes the issue.

Tested-by: Nick Sarnie sarnex@gentoo.org

Please let me know if you need anything else.

Thanks, Sarnex

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bugzilla-daemon＠bugzilla.kernel.org

12 Sep 12 Sep

12:23 a.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

Dave Johnson (dave@locochino.com) changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |dave@locochino.com

--- Comment #5 from Dave Johnson (dave@locochino.com) --- This is possibly related to my issue that popped up in 4.18, Vega 64 works with one of my displayPort monitors but not the DVI. from what I've seen others reporting on various searches on my issue, it's something with a clock setting where a khz value is referenced as "10" instead of "1" or something like that. Vague, I know, but I dunno.

Some get black screen, I get one display but not multi, and the user above me has corruption.

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bugzilla-daemon＠bugzilla.kernel.org

14 Sep 14 Sep

1:07 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #6 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) --- I think you're referencing this patch:

https://patchwork.freedesktop.org/patch/238065/

Which should be fixed in 4.18.

Please post a new ticket with a full dmesg log, Xorg log and your distro/desktop environment if you can still reproduce the problem.

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bugzilla-daemon＠bugzilla.kernel.org

15 Sep 15 Sep

4:54 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #7 from Dave Johnson (dave@locochino.com) --- (In reply to Nicholas Kazlauskas from comment #6)

...

I think you're referencing this patch:

https://patchwork.freedesktop.org/patch/238065/

Which should be fixed in 4.18.

Please post a new ticket with a full dmesg log, Xorg log and your distro/desktop environment if you can still reproduce the problem.

Ok, so yes and no I guess. I was assuming a single bug while there are apparently two. The one that causes video corruption and artifacts is in fact fixed for me now, but the multi-head support is still broken. It worked a couple of kernels ago, opening a new bug report over at opensuse since it seems to be opensuse specific for some reason (other live CDs work fine, looks like it's just something with Tumbleweed for whatever reason)

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bugzilla-daemon＠bugzilla.kernel.org

5:45 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #8 from Dave Johnson (dave@locochino.com) --- Update: for my possibly-separate-issue I can confirm that multi-head works on 4.16.13 and not 4.19_RC3

For now I'm staying on 4.16 as it's working perfectly back there.

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bugzilla-daemon＠bugzilla.kernel.org

14 Nov 14 Nov

12:23 a.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #9 from Benjamin Xiao (ben.r.xiao@gmail.com) --- I get the same visual corruption as well. It only appears when I run the monitor at 144Hz. 120Hz seems fine.

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bugzilla-daemon＠bugzilla.kernel.org

12:28 a.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #10 from Benjamin Xiao (ben.r.xiao@gmail.com) --- (In reply to Nicholas Kazlauskas from comment #3)

...

Created attachment 278455 [details] 0001-drm-amd-display-Use-higher-dispclk-value-for-dce120.patch

Do you mind testing another patch?

This patch has a narrower impact than the previous one (since it should only target Vega). I imagine that it would also fix your issue but it'd be nice to have verification.

Will this patch be backported to 4.19? Seems like right now its only in 4.20.

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bugzilla-daemon＠bugzilla.kernel.org

3 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #11 from Harry Wentland (harry.wentland@amd.com) --- GregKH just added the patch for 4.19-stable.

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bugzilla-daemon＠bugzilla.kernel.org

4 Dec 4 Dec

7:43 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #12 from Dave Johnson (dave@locochino.com) --- This is fixed for me in 4.19-stable

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bugzilla-daemon＠bugzilla.kernel.org

19 Dec 19 Dec

6:24 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

Axel (at46n@t-online.de) changed:

What |Removed |Added ---------------------------------------------------------------------------- CC| |at46n@t-online.de

--- Comment #13 from Axel (at46n@t-online.de) --- In which version should this bug being fixed? I still have this bug with 4.19.9. Or is this only fixed for vega? Because I've only a rx570.

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bugzilla-daemon＠bugzilla.kernel.org

6:31 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #14 from Nicholas Kazlauskas (nicholas.kazlauskas@amd.com) --- (In reply to Axel from comment #13)

...

In which version should this bug being fixed? I still have this bug with 4.19.9. Or is this only fixed for vega? Because I've only a rx570.

This was fixed for both Vega and Polaris but I think there was another regression that only affected Polaris in that release.

It should be fixed in amd-staging-drm-next. It'll probably make its way into stable at some point.

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bugzilla-daemon＠bugzilla.kernel.org

2 Jan 2 Jan

6:56 p.m.

New subject: [Bug 201067] [bisected] [4.19-rc2 regression] Display corruption with Vega 64 in 4.19-rc2

https://bugzilla.kernel.org/show_bug.cgi?id=201067

--- Comment #15 from Axel (at46n@t-online.de) --- It is fixed for me with kernel 4.20.0

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