Mailinglist Archive: opensuse (924 mails)

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Re: [opensuse] incorrect xorg setup in openSUSE 12.1
On 2012-10-14 22:17 (GMT+0200) Istvan Gabor composed:

I guess this line explains:
[ 390.595] (II) RADEON(0): Not using mode "1600x1200" (mode clock too high)

But why 12.1 thinks that mode clock too high?

I don't know. Likely some bug crept into the newer Xorg's radeon driver. That's an old video chip that likely gets little or no testing while Xorg evolves from version to version.

I do have more suggestions to try, mostly directed to getting Xorg to try a 60 refresh instead of 75. Your display supports a vertical refresh range of 50-85. Every LCD I've ever used worked fine using 60, and using 75 instead if it was even possible produced no no apparent difference over 60. is a complete Xorg.0.log from my Radeon 7500 on 12.1. is a grep of 1600x from that same file. Note that each modeline appears to be a 75 refresh mode. Yet, the script excerpt

from a running Konsole indicates via the xrandr command that only a 60 refresh is available and being used on my Dell 1600x1200 LCD.

So try first putting


on your grub cmdline in place of

splash=silent quiet vga=0x317

If that doesn't help, next use either xorg.conf and/or three files in xorg.conf.d/ to configure X to not try to use any 75 refresh modes. For the latter, redo as you did according to but remove the comment from the VertRefresh line and change the numbers on it from 56-86 to 49-66.

You can also try changing 'Option "PreferredMode" "1600x1200"' to 'Option "PreferredMode" "1600x1200@60"' or 'Option "PreferredMode" "1600x1200@75"'. Yet another thing to try is uncommenting the '# Option "DDC" "off"' line.

If none of above works either, try changing the 49-66 to 59-61 and try once more. If still no help, bring the thread to the opensuse-xorg mailing list after looking up how to create a modeline to include in xorg.conf or 50-monitor.conf to try first. Howtos for that are all over the web, though note I've never needed to use one in any Xorg version ever, with any LCD or CRT. The other list is more likely to draw attention from a developer who might be more help.
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata ***
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