On 2008.11.28 06:01:20 +0800, Uplink wrote: > Hello everyone, > > I recently received two shiny Asus Eee Top ET1602 units to play with. I > am to run Linux on them, and pretend that the Windows XP Home that came > with them is not there. But I have a problem... the LCD backlight is > turned off when X starts with the intel driver. > > I use Ubuntu 8.10 (intel driver 2.4.1, libdrm 2.3.1, kernel 2.6.27). As > soon as X starts, the backlight turns off and there's no way to turn it > back on while X is on display. Switching to a console turns the > backlight on, switching back to X turns it off again. > > The display is connected on the LVDS connector (according to the Windows > video driver), but when I run "xrandr --properties" there's something > wrong there: the range for the BACKLIGHT priperty is (0,0). I tried > switching the BACKLIGHT_CONTROL property to different values (starts > with 'native'), but to no avail. I hacked the drivers so the range > matches that of my laptop, which is (0,10781) in "combination" mode, but > still no effect on the backlight. > > The "vesa" driver works fine. Even more, the touch screen works with the > evtouch driver without much hassle: > http://wiki.linuxmce.org/index.php/Asus_Eee_Top . All that's missing is > the actual picture. > > I tried the 2.5.1 driver from Debian experimental (without upgrading any > drm kernel modules though) and I got the same result. > > At this point, I gave up on researching it on my own. Can someone help > me fix the backlight controls for this machine? >
Xorg.0.log with ModeDebug option on is required to see what's display config of this hardware. Please file a bug to https://bugs.freedesktop.org. -- Open Source Technology Center, Intel ltd. $gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827
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