Created attachment 399309 [details] lspci -vv Description of problem: Since kernel-2.6.32.9-67.fc12.x86_64 KMS doesn't set the correct video mode. The LCD reports 480i-Mode, X11 reports 1920x1200/60.0. kernel-2.6.31.12-174.2.22.fc12.x86_64 works without a problem. Version-Release number of selected component (if applicable): kernel-2.6.32.9-67.fc12.x86_64 and kernel-2.6.32.9-70.fc12.x86_64 How reproducible: always Steps to Reproduce: 1. Boot Actual results: LCD switches to 480i-mode, X11 think it's a 1920x1200/60.0 mode. Expected results: LCD should switch to 1920x1200/60.0. Additional info: LCD (LG L245WP) is attached via DVI/HMDI cable. kernel-2.6.31.12-174.2.22.fc12.x86_64 reports during boot: [drm] TMDS-15: set mode 1920x1200 19 kernel-2.6.32.9-67.fc12.x86_64 doesn't
Created attachment 399310 [details] DRM messages of 2.6.31
Created attachment 399311 [details] DRM messages of 2.6.32
You could try disabling tv-out by adding 'radeon.tv=0' to your kernel boot options.
Unfortunately that doesn't fix the problem. Using radeon.tv=0 I just get a blank/black screen.
Still doesn't work in Fedora13 RC (05/07/2010). I've to choose 'install with basic video driver' to get a usable installation screen. Shall I file a new bug against F13?
Looks like I have similar problem. In my case my laptop screen resolution is 1400x1050 and external monitor 1920x1200. When I boot with any 2.6.32.x kernel the screen on ext. is ... wavy and the "waves" are proportional to its resolution (the higher resolution the smaller and faster they are). When I boot with "nomodeset" option the screen looks fine, but after a few minutes or so it starts to go blank for a couple off seconds and when it switches on the view is ragged in some places. Today I've tested it on latest fedora 13 beta and it's even worse. I have Lenovo T60 with radoen x1400 card
Full Fedora 13 with 2.6.33 kernel fixed the issue for me. Although sometimes the scren starts to act strange after change of resolution or swithing to sleep mode. But its enough to swith the resolution to a different one and back and it's ok.
This bug still exists using kernel 2.6.33.4-95.fc13.x86_64. Changing Version to 13.
This regression still exists in Fedora 14 beta using kernel 2.6.35.6-43.fc14.x86_64.
Regression still exists in F14 using kernel 2.6.35.6-48.fc14.x86_64.
Created attachment 458139 [details] messages of 2.6.35.6-48.fc14.x86_64 using drm.debug=15
I have an LG L245WP display (w/ DVI-HDMI) finally working with KMS. Tested with up-to-date Fedora 15. Kernel: 2.6.40-4.fc15.x86_64 Display adapter: Radeon HD 4830
Same here. Seems to work using kernel 2.6.40-4.fc15.x86_64.