[Kernel-packages] [Bug 1430883] Re: continuously receive the message [drm:radeon_acpi_init] ERROR Cannot find a backlight controller

2015-03-11 Thread Joseph Salisbury
Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem? Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.0

[Kernel-packages] [Bug 1430883] Re: continuously receive the message [drm:radeon_acpi_init] ERROR Cannot find a backlight controller

2015-03-11 Thread Eugene
after loading appeared 2 errors System program problem detected Do you want to report the problem now? and [7.473000] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro [9.711091] rt3290sta: module verification failed: signature and/or required key missing - tainting kernel [