http://bugs.freedesktop.org/show_bug.cgi?id=22764
Summary: radeon driver with r600 sometimes fails to properly
activate external monitor
Product: xorg
Version: 7.4
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: Driver/Radeon
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Created an attachment (id=27681)
--> (http://bugs.freedesktop.org/attachment.cgi?id=27681)
xrandr --verbose output with working external monitor
I activate my external monitor with
$ xrandr --output DVI-0 --off
$ xrandr --output HDMI-0 --auto --left-of LVDS
Every third or fourth time the monitor does either get no signal it can use at
all, or it shows a garbled screen. It looks a bit like back in the days when
the refresh frequency of an analog monitor was not ok. The only thing I can do
to get a usable image is to reboot. Enabling and disabling of the output
devices does not help.
I am completely lost, when it comes to debugging this. I will attach the "xrand
--verbose" output of the working and non-working case, but I could find no
major difference. You can find my config in bug 22744. Driver version is
6.12.2, Kernel 2.6.30.
Tell me if I can give you any further information.
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