In reply to comment #17:
I can confirm that "acpi_backlight=vendor" on the kernel command line fixes brightness controt on a Sony Vaio TT
(II) intel(0): Integrated Graphics Chipset: Intel(R) Mobile Intel® GM45 Express Chipset
Kernel: 2.6.31-rc3 intel driver: 2.7.99.901-2 xorg: 7.4+1
In reply to comment #17:
I can confirm that "acpi_backlight =vendor" on the kernel command line fixes brightness controt on a Sony Vaio TT
(II) intel(0): Integrated Graphics Chipset: Intel(R) Mobile Intel® GM45 Express Chipset
Kernel: 2.6.31-rc3
intel driver: 2.7.99.901-2
xorg: 7.4+1