https://bugzilla.kernel.org/show_bug.cgi?id=41732
Summary: [radeon] KMS (and X.org) detect wrong outputs Product: Drivers Version: 2.5 Kernel Version: 3.1-rc3 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) AssignedTo: drivers_video-dri@kernel-bugs.osdl.org ReportedBy: niels_ole@salscheider-online.de Regression: No
On my notebook, 6520G (mobile A6 APU), KMS detects a screen on VGA-0 although there is no attached. Because of that it chooses a lower resolution than the internal display's native resolution. The selected mode causes the internal display to flicker, though.
In dmesg, I can see the following:
[drm:atom_op_jump] *ERROR* atombios stuck in loop for more than 5secs aborting [drm:atom_execute_table_locked] *ERROR* atombios stuck executing E3E6 (len 2585, WS 4, PS 4) @ 0xEAD0
Other issues I have with this : - xrandr reports a size of 0x0 inches for the internal display - the internal display uses only 6 bit/pixel and there seems to be no way to enable dithering - the brightness controls do not work although there is a sysfs acpi interface that gets updated - the display does not come back on after standby
These issues may be unrelated and I will create further bug reports if so, but maybe they give a hint concerning this issue.