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Message-id: <f84e4956-293f-801d-6b9f-df4226df87d2@augustwikerfors.se>
Date:   Tue, 27 Sep 2022 16:22:28 +0200
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Subject: Re: [REGRESSION] Graphical issues on Lenovo Yoga 7 14ARB7 laptop since
 v6.0-rc1 (bisected)
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To:     Leo Li <sunpeng.li@amd.com>, Alex Deucher <alexdeucher@gmail.com>
Cc:     Thorsten Leemhuis <regressions@leemhuis.info>,
        Harry Wentland <harry.wentland@amd.com>,
        Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>,
        linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org,
        regressions@lists.linux.dev
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From:   August Wikerfors <git@augustwikerfors.se>
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Hi Leo,

On 2022-09-27 00:29, Leo Li wrote:
> 
> Hi August, thanks for the log.
> 
> It seems the eDP panel does not fully satisfy the amdgpu requirements
> for enabling PSR SU, but we're enabling it anyways.
> 
> I suspect it may be due to the "DP_FORCE_PSRSU_CAPABILITY" bit being set
> in it's DPCD registers, I'm checking with some devs to see if that is
> expected.
> 
> In the meantime, can you give these two hacks a spin? Let me know if
> this helps with the glitches and system hangs:
> https://gitlab.freedesktop.org/-/snippets/7076
Yes, the issues do not happen with those patches applied.

> Also the dmesg, in particular this line:
>> [drm] PSR support 1, DC PSR ver 1, sink PSR ver 3 DPCD caps 
>> 0x70su_y_granularity 4 force_psrsu_cap **X**
Here is that line:
> [   12.085196] [drm] PSR support 1, DC PSR ver 1, sink PSR ver 3 DPCD caps 0x7b su_y_granularity 4 force_psrsu_cap 1

Regards,
August Wikerfors