I have a new Sony Vaio laptop with a 1366x768 screen using the intel "Mobile 915GM/GMS/910GML Express Graphics Controller" which can be driven by the xorg i810 driver. Works fine on the laptop in this resolution.
The problem I have is that many of the possible modes for this chipset return blank when xorg starts as in the example below from the xorg log - the mode I want to use is 1280x1024 for an external projector. I have (once!) been able to get 1280x1024 using 915resolution to force the mode, and two screens but I need to use clone mode so this wasnt practical (I want clone mode with the same desktop on both screens) Can someone point me towards a solution please. It seems to me that xorg is not reading the chipset correctly. Note that ddc on or off doesnt help (and if I have an external monitor attached when xorg starts, it really stuffs things up, also ddc on or off!) My requirement is to use 1360x768 when standalone, or 1280x1024 on either an LCD desk monitor, or same resolution on a projector in clone mode. When doing the external thing, the laptop screen doesnt have to be 'perfect'. Currently I can do this, but only in 1024x768, which looks terrible on the ext LCD due to aliasing. BillK ... Mode: 5c (0x0) ModeAttributes: 0x0 WinAAttributes: 0x0 WinBAttributes: 0x0 WinGranularity: 0 WinSize: 0 WinASegment: 0x0 WinBSegment: 0x0 WinFuncPtr: 0x0 BytesPerScanline: 0 XResolution: 0 YResolution: 0 XCharSize: 0 YCharSize: 0 NumberOfPlanes: 0 BitsPerPixel: 0 NumberOfBanks: 0 MemoryModel: 0 BankSize: 0 NumberOfImages: 0 RedMaskSize: 0 RedFieldPosition: 0 GreenMaskSize: 0 GreenFieldPosition: 0 BlueMaskSize: 0 BlueFieldPosition: 0 RsvdMaskSize: 0 RsvdFieldPosition: 0 DirectColorModeInfo: 0 PhysBasePtr: 0x0 LinBytesPerScanLine: 0 BnkNumberOfImagePages: 0 LinNumberOfImagePages: 0 LinRedMaskSize: 0 LinRedFieldPosition: 0 LinGreenMaskSize: 0 LinGreenFieldPosition: 0 LinBlueMaskSize: 0 LinBlueFieldPosition: 0 LinRsvdMaskSize: 0 LinRsvdFieldPosition: 0 MaxPixelClock: 0 ... (II) I810(0): Monitor0: Using hsync range of 31.50-100.00 kHz (II) I810(0): Monitor0: Using vrefresh range of 40.00-110.00 Hz (II) I810(0): Not using mode "1280x1024" (no mode of this name) (II) I810(0): Not using mode "1152x864" (no mode of this name) (II) I810(0): Not using mode "832x624" (no mode of this name) (II) I810(0): Not using mode "720x400" (no mode of this name) (II) I810(0): Correcting stride (1368 -> 2752) (II) I810(0): Increasing the scanline pitch to allow tiling mode (1376 -> 2048). (--) I810(0): Virtual size is 1368x768 (pitch 2048) (**) I810(0): *Built-in mode "1360x768" (**) I810(0): *Built-in mode "1024x768" (**) I810(0): *Built-in mode "800x600" (**) I810(0): *Built-in mode "640x480" (**) I810(0): Built-in mode "1360x768" (**) I810(0): Built-in mode "1064x600" -- gentoo-user@gentoo.org mailing list