drm: radeon_acpi_init Error: Cannot find a backlight controller
Community Discussion 768 views · 0 replies ·
sunilvarm
deepin
2016-10-11 00:27
Author
Hello Team,
First of all let me thank you for making such a beautiful linux distro available for general use.
I was extremly satisfied using the distro until this bug started ruining my experience.
Initially , the operating system was working fine. But once I started it the next day, I saw this error "drm: radeon_acpi_init Error: Cannot find a backlight controller" while booting in to the system. Its impact is so bad that the screen looks pretty dim even on full brightness settings provided by Deepin OS. I searched online for a soultion and couldn't get a worthy one.
Request you to let me know a solution if available as I don't want to move back to Win or other linux distros after using deepin.
中文 
Manual 
First of all let me thank you for making such a beautiful linux distro available for general use.
I was extremly satisfied using the distro until this bug started ruining my experience.
Initially , the operating system was working fine. But once I started it the next day, I saw this error "drm: radeon_acpi_init Error: Cannot find a backlight controller" while booting in to the system. Its impact is so bad that the screen looks pretty dim even on full brightness settings provided by Deepin OS. I searched online for a soultion and couldn't get a worthy one.
Request you to let me know a solution if available as I don't want to move back to Win or other linux distros after using deepin.
Best Regards,
Sunil