Hi Sergei,
On Fri, Aug 26, 2011 at 17:30, Sergei Trofimovich slyich@gmail.com wrote:
Around -rc2+ i've noticed the following warning in dmesg [1]
WARNING: at fs/sysfs/dir.c:455 sysfs_add_one+0xb8/0xf0() sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1/intel_backlight'
It tries to register backlight twice, so fails miserably. The machine is compaq-2510p with 965GM.
Reverting commit aaa6fd2a004147bf32fce05720938236de3361d9 helps. ("Not all systems expose a firmware or platform mechanism for changing the backlight intensity on i915, so add native driver support.")
Attached dmesg before reverting the patch and after.
There's another patch that fixes this issue:
https://patchwork.kernel.org/patch/1086232/
regards, Lucas De Marchi