On Sun, Feb 3, 2013 at 7:54 AM, Eduard Tibet <[email protected]> wrote: > Hello! > > I've already post this message to other several X-related forums some > time ago, but unfortunately I didn't get some information from there. > Seems that other people didn't faced such problems. Searching this > list for such problem gives some results but don't seem to be the same > as mine. > > Initial state: > I have 1 graphic card (based on ATI Radeon 9200) and 2 monitors (both > EIZO) with Debian 6.0 powered PC (default kernel 2.6.32.5-686). > Monitors have different resolutions: S1961 (1280x1024) and L985EX > (1600x1200). I use only single monitor each time (the other one even > doesn't connected to signal output). Both are works OK in console > (text) modes at all outputs (so technically they are seems to be OK). > S1961 works OK in all modes at all outputs in X session (DVI, VGA). > But L985EX has very strange problem: it works OK in all modes at VGA > output, but begins to blink when using DVI output. It seems like > monitor probing procedure takes place (i.e.: blank screen 1-2 sec. > > restoring image 2-3 sec. > blank screen again 1-2 sec. > restoring > image 2-3 sec.). Other interesting thing that the frequency of such > behaviour is mostly depends on resolution. At default (max res.) > 1600x1200 there are no possible to do anything in X session (blanking > and stable image are approx. 2 sec. each). If I change the resolution > to 1280x1024 X session begin more stable (blanking for 1 sec with > 20-30 sec. interval of stable image). If I change the resolution > futher to 1024x768 X session begin most stable at DVI output. I don't > face any blinking at all.
Sounds like display bandwidth issues. You might try setting the display priority to high: radeon.disp_priority=2 As per your attempt 4 below. As for the error you are getting, your kernel may be too old to support that parameter. A newer kernel may work better in general. Alex > > My experiments to solve the issue: > Try 1. First I tried to use other hdd with other non X-based OS and it > seems to be OK at 1600x1200 at DVI so it seems not to be a real > hardware problem. > Try 2. Then I tried to upgrade X.org to most recent version from > debian backports repo (first - was, second - upgraded): xserver-xorg > (7.5.8 > 7.6.8), xserver-xorg-core (1.7.7.14 > 1.10.4.1) > xserver-xorg-video-radeon (6.13.1.2 > 6.14.2.1). Sorry for the > packages name - they are debian specific, because I don't know how it > called in X repo. But nothing happened. > Try 3. I tried to play with xrandr modes, but no success. > Try 4. I tried to put radeon.disp_priority=2 at kernel boot (as > mentioned at [1], [2], [3]) but got an error message: "[5.433004] > radeon: Unknown parameter `disp_priority'" (initial call string: > [0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-2.6.32-5-686 > root=UUID=4ddfc6de-7006-47ae-b142-7fdf1228beae ro quiet > radeon.disp_priority=2 ) > > Now I don't know where to digg to solve the issue. > > I know that I need to provide the X.org.log and dmesg.out, but I don't > know, if I allowed to send it directly to the list. > > [1] https://bugzilla.kernel.org/show_bug.cgi?id=26552 > [2] https://bugs.freedesktop.org/show_bug.cgi?id=33657 > [3] https://bugs.freedesktop.org/show_bug.cgi?id=48772 > > -- > regards, Eduard > _______________________________________________ > [email protected]: X.Org support > Archives: http://lists.freedesktop.org/archives/xorg > Info: http://lists.x.org/mailman/listinfo/xorg > Your subscription address: [email protected] _______________________________________________ [email protected]: X.Org support Archives: http://lists.freedesktop.org/archives/xorg Info: http://lists.x.org/mailman/listinfo/xorg Your subscription address: [email protected]
