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On Wednesday 17 May 2006 08:12, W.Kenworthy wrote: |
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> I have a new Sony Vaio laptop with a 1366x768 screen using the intel |
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> "Mobile 915GM/GMS/910GML Express Graphics Controller" which can be |
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> driven by the xorg i810 driver. Works fine on the laptop in this |
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> resolution. |
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> |
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> The problem I have is that many of the possible modes for this chipset |
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> return blank when xorg starts as in the example below from the xorg log |
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> - the mode I want to use is 1280x1024 for an external projector. |
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> |
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> I have (once!) been able to get 1280x1024 using 915resolution to force |
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> the mode, and two screens but I need to use clone mode so this wasnt |
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> practical (I want clone mode with the same desktop on both screens) |
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> |
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> Can someone point me towards a solution please. It seems to me that |
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> xorg is not reading the chipset correctly. Note that ddc on or off |
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> doesnt help (and if I have an external monitor attached when xorg |
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> starts, it really stuffs things up, also ddc on or off!) |
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> |
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> My requirement is to use 1360x768 when standalone, or 1280x1024 on |
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> either an LCD desk monitor, or same resolution on a projector in clone |
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> mode. When doing the external thing, the laptop screen doesnt have to |
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> be 'perfect'. Currently I can do this, but only in 1024x768, which |
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> looks terrible on the ext LCD due to aliasing. |
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> |
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> |
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> BillK |
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> |
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|
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First, make sure you have proper modes in your VBIOS with 915resolution, and |
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that you have those resolution in your "Screen" section in xorg.conf. Then |
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make sure xorg knows which pipe has which display (e.g., I have |
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Option "MonitorLayout" "CRT,LFP" in my xorg.conf; check the driver's man |
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page). |
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After that, using clone mode should work with all those resolutions. However, |
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there are two things you must be aware of. Firstly, it seems you need to |
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restart xorg /after/ you connect the other monitor in order for it to enable |
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clone mode (although I think there is an option for the driver to enable |
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polling). Secondly, xorg fails to negotiate the proper resolution with |
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certain displays, e.g. I had a problem with a projector once. In that case, |
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you must set the correct resolution in your "Screen" section and delete the |
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others. |
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|
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Good luck. |
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