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Old 08-19-2014, 07:46 PM   #1
Registered: Jun 2010
Distribution: CRUX 3.0
Posts: 76

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tty dpms doesn't turn off backlight. doing "setterm -blank force" 2 times will

I'm using crux with kernel 3.16.1 on an HP 8510p laptop.
lspci says video card is
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV630/M76 [Mobility Radeon HD 2600]

If I switch to a tty right after boot and try `setterm -blank force`, the lcd and the backlight are turned off the first time. Doing `setterm -blank poke` to turn the screen back on and then doing `setterm -blank force` again results in the lcd turning off but the backlight staying on. After that the result is always lcd off, but the backlight on, unless I do `setterm -blank force` twice in a row which leaves the lcd and backlight off.

dpms in Xorg works perfectly though.

I booted latest Fedora and OpenSuse and it is the same in them.

Last edited by page_seven; 08-20-2014 at 02:44 AM.


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