[Bug 110863] Blank screen after locking and vt-switch

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110863

--- Comment #13 from Yves-Alexis <corsac at debian.org> ---
(In reply to Jyoti Yadav from comment #12)
> @Yves-Alexis, In dmesg logs, we could see 
> [drm:intel_cpu_fifo_underrun_irq_handler] *ERROR* CPU pipe B FIFO underrun
> 
> error only just once. After that looks like display has recovered this
> underrun issue and this is seen  when we are plugging DP display.
> 
> Can you please explain this locking scenario? What is exactly you
> hotplugging in?

This is totally unrelated to hotplugging. It happens on a laptop with no
attached screen. By “locking” I mean “locking the screen”, so I have to enter a
password to gain access to my desktop.

Is there something else confusing?
> 
> And this blank screen persists?

Until I manually do a vt-switch, yes. And a lot of people don't know about this
workaround and desperately try to access their computer once locked (see the
downstream bug reports).

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