https://bugs.freedesktop.org/show_bug.cgi?id=36823
Summary: Firmware Bug: ACPI No _BCQ method
Product: xorg
Version: unspecified
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: Driver/Radeon
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Radeon Device aa68 Graphics card (Cedar). Used in hybrid graphics with Intel
i915 vgaswitcheroo, hence both are compiled in (Bug #36783 [1]) and KMS enabled
(without KMS the problem usually not occurs). On boot, the screen tunrs of the
backlight by itsself and has to be turned on manually[2]. A message in dmesg
that is likely to be related says
Firmware Bug: ACPI: No _BCQ method
THe log has several errors related to the radeon. Kernel is 39-rc5.
[1] https://bugs.freedesktop.org/show_bug.cgi?id=36783
[2] http://forums.gentoo.org/viewtopic-t-874961.html
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