Comment 42 for bug 921321

Still present in kernel 3.6.2, even with acpi_backlight=vendor nouveau.force_post=1 and "Support for backlight control" disabled in the kernel configuration.

The funny thing is that the display seem to come back at the right brightness initially and then is changed to max brightness a second after.

Like many people, this bug unfortunately prevents me to switch to the free driver. It would be really nice if it was fixed.