[Bug 93417] xf86-video-ati [mobility radeon x2300] driver does not identify LVDS "no monitor specified"

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Dec 17 11:13:50 PST 2015


--- Comment #4 from Alex Deucher <alexdeucher at gmail.com> ---
The LVDS is detected as an 1280x800 panel.  Does it seem like a backlight
issue?  Is this a regression?  If so when did it used to work?  Can you try
setting radeon.backlight=0 on the kernel command line in grub to disable driver
backlight control.  You might be seeing a regression as a result of this patch:
which was fixed in:

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