https://bugs.kde.org/show_bug.cgi?id=486504

--- Comment #12 from Kalzi <kalzwa...@yahoo.com> ---
(In reply to Zamundaaa from comment #9)
> (In reply to Michael Butash from comment #4)
> > Is it DP output to DP input, or some mode conversion to HDMI?  
> > 
> > I have this happen almost clockwork after a suspend awaken, reboot, even
> > just a glitch of the power to the dock or something, and seems to come
> > largely from having to use DP on dock to HDMI on TV conversion.  Often I'll
> > see the display after reset come up instead of my Samsung TV's I use to
> > display as generic "NVidia 640x480", and is usually all xrandr sees as well,
> > indicating like the conversion chip in the cable/adapter glitches and EDID
> > data doesn't resolve correctly on the host.  I often have to end up
> > unplugging physically and resetting the DP end of the cable/adapter to fix
> > it.
> That's a NVidia driver bug, the proprietary driver has some issues with
> reading the EDID sometimes. You can report it at
> https://forums.developer.nvidia.com/c/gpu-graphics/linux/148
> 
> 
> (In reply to Kalzi from comment #8)
> > I have attached three txt files that have the output of drm_info for before,
> > during and after
> 
> Okay, so the driver reports the correct mode list, and KWin has actually set
> the 640x480 mode. Can you also attach the output of
> > kscreen-doctor -o
> and
> > wayland-info
> while the output is wrongly in that 640x480 mode?
> 
> What I suspect is happening is that the driver temporarily reports 640x480
> as the only supported mode at some point after the display goes to standby,
> and KWin doesn't automatically switch back to the correct mode (which
> shouldn't be very complicated to fix). If the display settings doesn't let
> you set the right mode though, there might be more going on

attached both. Hope it helps. I still can't change the resolution on the blown
out screen, I'd have to find a way to be able to get to the normal screen to
change the correct resolution from there

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