Setting gamma and brightness
Intel offers no way to adjust these at the driver level. Luckily these can be set with
Adding acpi_backlight=vendor to the kernel boot line allows the backlight to be changed on the Intel HD 3000 via xbacklight without root access. Perhaps a note could be added to provide this option.
papabean (talk) 02:40, 14 January 2013 (UTC)
acpi_backlight=vendor stopped working a few kernels ago. (No. I did not revert to be certain).
Best performance options
In my experience (i5 CPU w/ HD4000, Z77 mobo) the best performance can be had with the following options:
- SNA acceleration method
- Vertical sync enabled
- TearFree option enabled
i915.semaphores=1kernel option turned on
Using the ck kernel specific to the CPU architecture also seems to make the video performance more consistent, but not necessarily any faster.