[Bug 213779] New: Screen stays blank on resume. from hibernate

[Bug 213779] New: Screen stays blank on resume. from hibernate

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=213779

            Bug ID: 213779
           Summary: Screen  stays blank on resume. from hibernate
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.13
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: alex14641@yahoo.com
        Regression: No

If I close my laptop lid and reopen it, the screen stays blank. Reverting the
following commit fixes the issue:

commit 9127daa0a8d88a6e6452eb8b7c9be4c3f42a867e
Author: Stylon Wang <stylon.wang@amd.com>
Date:   Tue Mar 2 19:25:56 2021 +0800

    drm/amd/display: Guard ASSR with internal display flag

    [Why]
    ASSR enabling only considers capability declared in DPCD.
    We also need to check whether the connector is internal.

    [How]
    ASSR enabling need to check both DPCD capability and internal display
    flag.

    Signed-off-by: Stylon Wang <stylon.wang@amd.com>
    Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
    Acked-by: Anson Jacob <Anson.Jacob@amd.com>
    Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
    Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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[Bug 213779] Screen stays blank on resume. from hibernate

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=213779

--- Comment #1 from alex14641@yahoo.com ---
The graphics card is a RX580.

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[Bug 213779] Screen stays blank on resume. from hibernate

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=213779

Alex Deucher (alexdeucher@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #2 from Alex Deucher (alexdeucher@gmail.com) ---
Can you try the patch here:
https://gitlab.freedesktop.org/drm/amd/-/issues/1620

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[Bug 213779] Screen stays blank on resume. from hibernate

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=213779

alex14641@yahoo.com changed:

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

--- Comment #3 from alex14641@yahoo.com ---
That patch works.

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[Bug 213779] Screen stays blank on resume from hibernate

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=213779

alex14641@yahoo.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Screen  stays blank on      |Screen  stays blank on
                   |resume. from hibernate      |resume from hibernate

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[Bug 213779] Screen stays blank on resume from hibernate

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=213779

--- Comment #4 from Alex Deucher (alexdeucher@gmail.com) ---
Fix is in 5.14 and should land in stable shortly:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6be50f5d83adc9541de3d5be26e968182b5ac150

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