[Bugme-new] [Bug 16514] New: Blank laptop panel after loading i915
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Wed Aug 4 05:24:14 PDT 2010
https://bugzilla.kernel.org/show_bug.cgi?id=16514
Summary: Blank laptop panel after loading i915
Product: Drivers
Version: 2.5
Kernel Version: 2.6.34.2, 2.6.35
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Video(DRI - Intel)
AssignedTo: drivers_video-dri-intel at kernel-bugs.osdl.org
ReportedBy: byron at theclarkfamily.name
Regression: Yes
Hardware - Dell Latitude E6410
Video Card -
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated
Graphics Controller (rev 02) (prog-if 00 [VGA controller])
Subsystem: Dell Device 040a
Flags: bus master, fast devsel, latency 0, IRQ 28
Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 70b0 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
Kernel modules: i915
Kernel Versions That Work: 2.6.34, 2.6.34.1
Kernel Versions That Do Not Work: 2.6.34.2, 2.6.35
Problem: Blank screen after loading i915 module.
After loading the i915 module from one of the affected kernels, the laptop
display panel is blank, but backlit. After starting X, "xrandr --output DP1
--off; xrandr --output DP1 --auto" turns the backlight off and then on again,
but the display remains blank.
Booting the laptop in a docking station with an external monitor attached shows
the display on the external monitor.
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