Yes, this is supported by the DDX driver. But not by the mesa/i915 driver. If you want a performant desktop on i915, don't use unity.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/426380 Title: [i915gm] [i915] 23" external Dell VGA monitor at full resolution not possible with Desktop Effects enabled Status in “xserver-xorg-video-intel” package in Ubuntu: Confirmed Bug description: Binary package hint: xserver-xorg-video-intel On a Sony VAIO VGN-TX650P laptop with integrated Intel 915 graphics, Desktop Effects enabled, default behavior with an external VGA monitor (Dell SP2309W) in karmic is to mirror the displays at the lowest common resolution. When I disabled the mirroring and set the external monitor to its full resolution, the screen goes black (with a small vertical line along the left edge). The same happens with xrandr --output VGA1 --mode 2048x1152. There is no failsafe to return to the prior working resolution. Fortunately, I had a terminal open and was able to use xrandr to return to the prior mode by typing blindly. But I was only able to do that after several prior times of doing a "hard" poweroff because the mouse was frozen and the whole system also seemed to be frozen. As you can see below, the modes are being correctly picked up, but something goes wrong when full resolution is being applied and compiz is running. Full resolution is successfully applied, with no blank screen, when Desktop Effects are turned off. I am aware of the hardware texture limitation under compiz preventing virtual modes greater than 2048x2048 from working on i915's (https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video- intel/+bug/383345/comments/30), but it is unclear to me whether this is currently supported with KMS with the current karmic (or xorg- edgers PPA) packages, and Bug #146859 has status of Fix Released. $ lspci -vvnn | grep VGA Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2592] (rev 03) Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- BridgeCtl: Parity- SERR- NoISA+ VGA- MAbort- >Reset- FastB2B- Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- BridgeCtl: Parity- SERR- ISA- VGA- MAbort- >Reset+ 16bInt+ PostWrite+ Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- $ sudo lshw -C system -C display -sanitize computer description: Notebook product: VGN-TX650P vendor: Sony Corporation version: J0015963 serial: [REMOVED] width: 32 bits capabilities: smbios-2.3 dmi-2.3 configuration: boot=normal chassis=notebook uuid=CE36EA00-DF2D-11D4-8523-00014A987C5D *-display:0 description: VGA compatible controller product: Mobile 915GM/GMS/910GML Express Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 03 width: 32 bits clock: 33MHz capabilities: pm bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:16 memory:b0080000-b00fffff ioport:1800(size=8) memory:c0000000-cfffffff(prefetchable) memory:b0040000-b007ffff *-display:1 UNCLAIMED description: Display controller product: Mobile 915GM/GMS/910GML Express Graphics Controller vendor: Intel Corporation physical id: 2.1 bus info: pci@0000:00:02.1 version: 03 width: 32 bits clock: 33MHz capabilities: pm cap_list configuration: latency=0 resources: memory:64000000-6407ffff $ xrandr Screen 0: minimum 320 x 200, current 2048 x 1152, maximum 4096 x 4096 VGA1 connected 2048x1152+0+0 (normal left inverted right x axis y axis) 510mm x 290mm 2048x1152 59.9*+ 1280x1024 75.0 1024x768 75.1 60.0 800x600 75.0 60.3 640x480 75.0 60.0 720x400 70.1 LVDS1 connected (normal left inverted right x axis y axis) 1366x768 59.8 + 1360x768 59.8 1024x768 85.0 75.0 70.1 60.0 832x624 74.6 800x600 85.1 72.2 75.0 60.3 56.2 640x480 85.0 72.8 75.0 59.9 720x400 85.0 640x400 85.1 640x350 85.1 TV1 disconnected (normal left inverted right x axis y axis) $ sudo get-edid | parse-edid parse-edid: parse-edid version 2.0.0 get-edid: get-edid version 2.0.0 Performing real mode VBE call Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0 Function supported Call successful VBE version 300 VBE string at 0x2110 "Intel(r)915GM/910ML/915MS Graphics Chip Accelerated VGA BIOS" VBE/DDC service about to be called Report DDC capabilities Performing real mode VBE call Interrupt 0x10 ax=0x4f15 bx=0x0 cx=0x0 Function supported Call successful Monitor and video card combination does not support DDC1 transfers Monitor and video card combination supports DDC2 transfers 0 seconds per 128 byte EDID block transfer Screen is not blanked during DDC transfer Reading next EDID block VBE/DDC service about to be called Read EDID Performing real mode VBE call Interrupt 0x10 ax=0x4f15 bx=0x1 cx=0x0 Function supported Call successful parse-edid: EDID checksum passed. # EDID version 1 revision 3 Section "Monitor" # Block type: 2:0 3:ff # Block type: 2:0 3:fd # Block type: 2:0 3:fc Identifier "DELL SP2309W" VendorName "DEL" ModelName "DELL SP2309W" # Block type: 2:0 3:ff # Block type: 2:0 3:fd HorizSync 30-92 VertRefresh 56-85 # Max dot clock (video bandwidth) 200 MHz # Block type: 2:0 3:fc # DPMS capabilities: Active off:yes Suspend:yes Standby:yes Mode "2048x1152" # vfreq 59.909Hz, hfreq 70.992kHz DotClock 156.750000 HTimings 2048 2096 2128 2208 VTimings 1152 1155 1160 1185 Flags "-HSync" "+VSync" EndMode # Block type: 2:0 3:ff # Block type: 2:0 3:fd # Block type: 2:0 3:fc EndSection ProblemType: Bug Architecture: i386 CheckboxSubmission: 828a5c329e78d7d842afb06bc29466b6 CheckboxSystem: b4511570833504a308af03903c18ec08 Date: Tue Sep 8 12:40:27 2009 DistroRelease: Ubuntu 9.10 Package: gnome-control-center 1:2.27.91-0ubuntu3 ProcEnviron: SHELL=/bin/bash LANG=en_US.UTF-8 ProcVersionSignature: Ubuntu 2.6.31-9.29-generic SourcePackage: gnome-control-center Uname: Linux 2.6.31-9-generic i686 ProblemType: Bug Architecture: i386 CheckboxSubmission: 828a5c329e78d7d842afb06bc29466b6 CheckboxSystem: b4511570833504a308af03903c18ec08 Date: Tue Sep 8 13:33:16 2009 DistroRelease: Ubuntu 9.10 MachineType: Sony Corporation VGN-TX650P Package: xserver-xorg-video-intel 2:2.8.1-1ubuntu1 PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.31-9-generic root=/dev/mapper/hostname-root ro quiet splash ProcEnviron: LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.31-9.29-generic RelatedPackageVersions: xserver-xorg 1:7.4+3ubuntu5 libgl1-mesa-glx 7.6.0~git20090817.7c422387-0ubuntu3 libdrm2 2.4.12+git20090801.45078630-0ubuntu1 xserver-xorg-video-intel 2:2.8.1-1ubuntu1 xserver-xorg-video-ati 1:6.12.99+git20090825.fc74e119-0ubuntu1 SourcePackage: xserver-xorg-video-intel Uname: Linux 2.6.31-9-generic i686 XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf' dmi.bios.date: 08/05/2005 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: R0031V1 dmi.chassis.type: 10 dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrR0031V1:bd08/05/2005:svnSonyCorporation:pnVGN-TX650P:pvrJ0015963:cvn:ct10:cvr: dmi.product.name: VGN-TX650P dmi.product.version: J0015963 dmi.sys.vendor: Sony Corporation fglrx: Not loaded system: distro: Ubuntu architecture: i686kernel: 2.6.31-9-generic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/426380/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
