On Thu, 2016-06-23 at 10:42 -0600, James Lay wrote: > Hey all, > > so....I have an oldish iMac 24 inch. It comes with a Radeon Mobility > HD 4850. After install of Stretch testing, this worked fine, save > for > one small issue of the backlight not going out. As I run this as > kind > of a server with no need to see the screen most of the time, I'd like > to get the backlight to go out. So I installed firmware-linux- > nonfree. > This actually causes me to get a blank screen...just the backlight > on. > I can ssh into the machine, but I get no screen at all (http://askub > un > tu.com/questions/688388/14-04-gets-black-screen-unless-radeon- > modeset-0 > ). I DO however see the backlight go out. Right now I'm using > radeon.modeset=0 to get an active screen again. My question is there > any way I can troubleshoot getting the backlight to go out? I've got > to: I found some old reports about video output being redirected to the external display, that might be something to investigate? You don't run X at all? If so I'm not quite sure of to check for which display is active or how to control backlight. -- Cheers, Sven Arvidsson http://www.whiz.se
Attachment:
signature.asc
Description: This is a digitally signed message part