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On Sunday 04 March 2007, list-catcher <list-catcher@××××××××××.com> wrote |
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about '[gentoo-amd64] twinview': |
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> Does anyone use twinview to run two monitors at different resolutions? |
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|
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No, although I current run two dual-head setups. One on the nvidia driver |
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(using two cards) and one on the radeon driver (using a single, laptop |
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card). |
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> I've got two monitors one on top of the other with the lower |
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> resolutioned one on top. The one on top (lower resolution) has a dead |
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> area where the window manager/X thinks exists but doesn't show. |
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> Sometimes the window manager will put windows there that I can't see. |
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Sounds like your Xinerama isn't working quite right. |
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> I'm not sure where the problem is because different window managers |
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> treat it differently, although the dead space exists in all of them. |
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> |
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> xorg.conf is attached. |
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Short answer: You are using two layers of Xinerama: the full Xinerama |
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extension provided by the server and a faux-Xinerama provided by TwinView. |
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They don't get along, so you'll have to drop one or the other. |
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Long answer: |
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I see you are using the Xinerama extension AND TwinView. On my laptop I |
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use a different driver (radeon) and method (MergedFB + MergedXinerama), |
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but I get similar results. The combination of Xinerama and the |
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faux-Xinerama used by TwinView/MergedXinerama doesn't work well together; |
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I either get dead areas or (better, but something I don't like) desktop |
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scrolling within a larger virtual desktop. |
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|
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If I turn off MergedFB+MergedXinerama and instead use two device sections |
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(one for the each head provided by the video card) and the Xinerama |
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extension things work well (no dead areas or desktop scrolling), although |
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my driver (I don't know about yours) doesn't support DRI in such a mode. |
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If I turn off the Xinerama extension but continue to use a single device |
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section with the MergedFB+MergedXinerama options, things work even better |
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(but, YMMV); no dead areas or desktop scrolling AND I get DRI. |
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So, I suggest turning off the Xinerama extension and trying that, first. |
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If that doesn't work you may want to discard TwinView and instead use two |
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device sections that are nearly identicial -- one will have 'Screen 0' in |
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it's config and the other will have 'Screen 1'. I don't know what impact |
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this second option may have on hw accceleration with your driver. |
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As an aside, I think this could reasonably be called a xorg-server bug, |
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especially since it does affect the xorg-radeon driver. (If it only |
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affected nvidia and/or fglrx that would be a different story.) |
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-- |
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Boyd Stephen Smith Jr. ,= ,-_-. =. |
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bss03@××××××××××.net ((_/)o o(\_)) |
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http://iguanasuicide.org/ \_/ |
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