[Bug 105571] New: eDP PSR leads to black screen on Asus UX305FA (Core M 5Y10)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=105571

            Bug ID: 105571
           Summary: eDP PSR leads to black screen on Asus UX305FA (Core M
                    5Y10)
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.3-rc4
          Hardware: Intel
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: tobias.polzer+kernelbugtracker at gmail.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

When forcing eDP panel self refresh via 'i915.enable_psr=1' it starts working,
but after switching screen resolution, the screen is only visible for a about 1
second, then it becomes black (backlight still on).
The only way I have found to get it back to working again without a reboot is
standby. This works most of the time, but sometimes (~20%) of the times waking
up from standby has the same effect.
This is not a new bug, it has been this way ever since PSR started working at
all on that hardware.
Is there anything I can do to help debug this problem?

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