I installed Ubuntu 14.04 in my new HP-15-Pavillion E026ax laptop with configuration AMD A10 processor with dual radeon graphics, when I starts the Ubuntu os it always says The system is running in low-graphics mode and also shows in console [drm:radeon_acpi_init] ERROR Cannot find a backlight controller. Please help me if possible. I m fully fed up with Ubuntu now. I do all of ur solutions on askubuntu and Ubuntu forums. I also installed Ubuntu 14.04 thrice in a day... please do needful as soon as possible. sudo apt-get install fgrlx..but this command is not a solution for me...
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Which driver did you install? How did you install it? – Venkatesh May 02 '14 at 05:13
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Try this:
sudo software-properties-gtk
Choose additional drivers tab, then see if there available drivers.
Next after choosing the available driver restart your computer.
If that didn't work, try this command
sudo update-alternatives --config x86_64-linux-gnu_gl_conf
and change the value to different driver.
Thats all i can think of.
Moga
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