On Sun, Apr 24, 2016 at 21:55:12 -0700, J Mo wrote:
> Package: xorg
> Version: 1:7.7+15
> Severity: normal
>
> I have Zotac ZBox Nano CA320 which uses an AMD APU with a Radeon HD 8250.
> It's an Intel NUC-like system, and this chip is commonly found on laptops.
>
> I have X running KDE5 (sddm) successfully but am troubleshooting another
> video bug. I wanted to turn off AccelMethod glamor (the default) to find out
> if the admgpu/radeon driver was causing some artifacts when glamor mode was
> active (as opposed to EXA).
>
> I tried shutting down sddm and then running "Xorg -configure", but that fails
> with the "Number of created screens does not match number of detected
> devices." error. I have attached the log from that session. The output
> Xorg.conf.new file looks fairly complete, but no configuration that I've
> tried works. The only thing that will get X working successfully is no manual
> configuration.
>
> I've also tried just dropping config bits into /etc/X11/xorg.conf.d/ and
> anything short of a blank file causes Xorg to fail.
>
> If we read here:
> https://wiki.debian.org/Xorg#What_if_I_do_not_have_an_xorg_config_file.3F
>
> This is apparently a fairly common and well-known problem, but there doesn't
> seem to be any resolution that I was able to find. The advice on the wiki
> link above is non-helpful.
>
> So, what now?
>
Yes, Xorg -configure is known broken. Don't use that. Just write
Section "Device"
Identifier "glamor"
Option "AccelMethod" "glamor"
EndSection
to /etc/X11/xorg.conf.
