[Bug 76276] New: Backlight control broken on Dell XPS13 w/ kernel 3.14-rc7
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Mon Mar 17 09:31:21 PDT 2014
https://bugs.freedesktop.org/show_bug.cgi?id=76276
Priority: medium
Bug ID: 76276
CC: intel-gfx-bugs at lists.freedesktop.org
Assignee: intel-gfx-bugs at lists.freedesktop.org
Summary: Backlight control broken on Dell XPS13 w/ kernel
3.14-rc7
QA Contact: intel-gfx-bugs at lists.freedesktop.org
Severity: normal
Classification: Unclassified
OS: All
Reporter: romain at orebokech.com
Hardware: Other
Status: NEW
Version: unspecified
Component: DRM/Intel
Product: DRI
Created attachment 95952
--> https://bugs.freedesktop.org/attachment.cgi?id=95952&action=edit
dmesg of broken kernel with drm.debug=0xe
On a Dell XPS13 (IVB version), backlight control is broken with v3.14-rc7, it
was previously working with v3.13. Reverting patch bc0bb9fd1c78 ("drm/i915:
remove QUIRK_NO_PCH_PWM_ENABLE") gets things working again.
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