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Description of problem: After I upgraded from F7, X doesn't accept my default configured mode of 1400x1050 anymore but reverts back to 1280x1024. In the logs it complains that using 1400x1050 either HSync or VRefresh would be out of range (which is bogus). Ironically I can choose 1600x1220 with xrandr, but that resolution is much too mushy on my CRT (19" Iiyama Vision Master Pro 450). Version-Release number of selected component (if applicable): xorg-x11-drivers-7.2-9.fc8 xorg-x11-drv-ati-6.7.195-3.fc8 xorg-x11-server-Xorg-1.3.0.0-33.fc8 How reproducible: Always Steps to Reproduce: 1. Start X 2. run xdpyinfo or check the monitor settings for used video mode Actual results: Uses 1280x1024, offers up to 1600x1200 with xrandr. nils@wombat:~> grep 1400x1050 /var/log/Xorg.0.log (II) RADEON(0): Not using default mode "1400x1050" (hsync out of range) (II) RADEON(0): Not using default mode "1400x1050" (vrefresh out of range) (II) RADEON(0): Not using default mode "1400x1050" (vrefresh out of range) (II) RADEON(0): Not using default mode "1400x1050" (vrefresh out of range) (II) RADEON(0): Not using default mode "1400x1050" (vrefresh out of range) (II) RADEON(0): Not using default mode "1400x1050" (vrefresh out of range) Expected results: Uses 1400x1050 mode. `grep 'Modeline "1400x1050"' /var/log/Xorg.0.log` not coming back empty Additional info: I guess it probes the available modes from the monitor which doesn't report a 1400x1050 mode. Still, the error message about the mode is bogus because the standard modelines should be well in the range of what the monitor accepts (HSync 27-115, VRefresh 50-160) and in fact accepted in F7. I'll attach my used xorg.conf but found the same to be true with a missing xorg.conf, with various (now reverted) attempted workarounds like adding manual modelines to xorg.conf, optionally trying to force it to use a particular one with "PreferredMode".
Created attachment 251331 [details] xorg.conf
Created attachment 251341 [details] Xorg.0.log
NB, I'm currently blocking the radeon kernel module to be loaded due to problems with DRI, bug #228414. But I really don't think that this has any relevance to this problem.
(In reply to comment #3) I've tried kernel-2.6.23.1-45.fc8 now with DRI enabled, but no changes to this issue.
Ping... Is there anything else I need to test or check?
No changes with xorg-x11-drv-ati-6.7.196-4.fc8. Is there anything I can do? 1280x1024 is really annoying not only because it's lower than what should go but also because of its non-square pixels on this monitor (I manipulate images on this machine, I'd really like it if shapes weren't distorted). The next lower square-pixel resolution (4:3) would be 1152x864 but that's really too low.
I've got it working with some not so obvious changes to xorg.conf: [...] Section "Monitor" Identifier "Monitor0" HorizSync 27.5 - 114.5 VertRefresh 50.5 - 159.5 Option "dpms" EndSection Section "Device" Identifier "Videocard0" Driver "radeon" Option "Monitor-DVI-0" "Monitor0" EndSection [...] I had the monitor section previously, but adding 'Option "Monitor-DVI-0"' did the trick. My setup is an analog monitor (CRT) connected to the DVI-I output of my card via a suitable adapter cable. I suspect that 1) instead of probing the HorizSync and VertRefresh values, it just relies on the VESA modes DDC offers and 2) it couples a monitor section in xorg.conf with the first available instead of used output. My take on 1) is that it should probe the monitor for horizontal and vertical limits and if that isn't possible, lookup the values for the model in hwdata/MonitorsDB.
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This seems fixed in F10 with xorg-x11-drv-ati-6.9.0-54.fc10.x86_64, without an xorg.conf it starts up with the maximum resolution of 2048*1536px.
I am using an HP A4576A 21" CRT attached to the VGA input of an ATI X800 card. I had overcome the issue by adding: Section "Monitor" Identifier "Monitor0" VendorName "Hewlett-Packard" ModelName "A4576A" HorizSync 30.0 - 107.0 VertRefresh 50.0 - 160.0 ModeLine "1400x1050@75" 155.8 1400 1496 1648 1896 1050 1051 1054 109 6 +hsync +vsync Option "PreferredMode" "1400x1050" EndSection This was not necessary anymore for F9. However, the last time I tried (a few weeks ago) for "rawhide", X would start up at 1280x1024 when no xorg.conf was present. Moreover, mode 1400x1050 was missing from the available modes suggested in "System > Preferences > Hardware > Screen Resolution" (1600x1200 was present though). I needed an xorg.conf with an entry like the above one in order to make it available again. Bug 465239 in which I had reported an excessive resolution of 2048x1536 is definitely resolved though.