On Sun, Jun 13, 2010 at 10:39 PM, Stefano <pietran...@gmail.com> wrote: > Package: xserver-xorg-video-radeon > Version: 1:6.13.0-2 > Severity: important > Tags: squeeze sid > > *** Please type your report below this line *** > > Lately, I started playing with radeon/KMS (see e.g. #585815). > > Now, I don't know if it was because of my intervention or of a recent > upgrade, but when I started my laptop the screen resolution was all > messed up. > > I had 800x600 instead of the usual 1024x768. > > Looking around, I discovered that some graphic cards mistakenly detect > the S-video/TV-out output as connected and set the screen resolution at > 800x600. This has been disabled by default for some chipsets, but not > for mine (RV350 - Mobility Radeon 9600 M10). > > A solution is to disable the S-video output by default at the boot. > > I added the kernel parameter > > video=SVIDEO-1:d > > to GRUB_CMDLINE_LINUX in /etc/default/grub and ran update-grub as root. > > That restores the resolution that I had before. > > Beware that the correct value for the "video=" parameter is listed in > /sys/class/drm so it maight be different for other users. > > I have read that this option does not allow to use the S-video output, > but I could not verify it (I don't use that output at all). >
You can still use it in X; that parameter just disables it for the console. > Also, I have read that the parameter must be the last of the kernel > options otherwise it won't work. Again, I have not verified that. > > Now, it don't know if it would be a good option to disable the S-video > output for my chipset directly in the driver or to disable it using the > kernel parameter. The option you used is the correct one. Unfortunately, load detection for tv-out is often unreliable. There's not a lot you can do to fix it. Alex -- To UNSUBSCRIBE, email to debian-kernel-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/aanlktimpemgrzrtq954-4bagn95wxsiwxwjjpm8ud...@mail.gmail.com
