Sounds related to my experience with a 1920x1200 HDMI connected to a laptop. After boot and auto-login, if the laptop display is configured above the external, the external comes up blank. Side by side, the laptop comes up blank. If I change the desktop background, then both monitors show the proper background.
next reboot I'll have to try the lightdm restart idea to see what happens. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1033052 Title: Black screen after completed boot on ASUS Eee 1101HA (xubuntu 12.04: psb_gfx/gma500: ioremap error for 0x7f66e000-0x7f671000) Status in “xorg” package in Ubuntu: New Bug description: Screen is black after boot has completed. Entering teminal window (Ctrl + Alt + F1) works fine. Returning to the graphical window (Ctrl + Alt + F7), the upper half og the scrren is filled with the lower part of the background image and a split login window while the lower half of the screen is black. The cursor is responsive and tracks the mousepad. Moving the cursor around makes more of the background image visible. Workaround (sort of)): Return to the terminal window, log in and issue: $ sudo service lightdm stop; sudo service lightdm start This will restore the expected GUI login window. This workaround fails after suspend. $ lspci -vvk [...] 00:02.0 VGA compatible controller: Intel Corporation System Controller Hub (SCH Poulsbo) Graphics Controller (rev 07) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device 83ce Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0 Interrupt: pin A routed to IRQ 22 Region 0: Memory at f3f80000 (32-bit, non-prefetchable) [size=512K] Region 1: I/O ports at c880 [size=8] Region 2: Memory at d0000000 (32-bit, non-prefetchable) [size=256M] Region 3: Memory at f3f40000 (32-bit, non-prefetchable) [size=256K] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: gma500 Kernel modules: psb_gfx $ dmesg [...] [ 12.538351] [drm] Initialized drm 1.1.0 20060810 [ 12.725063] Linux video capture interface: v2.00 [ 12.765972] uvcvideo: Found UVC 1.00 device USB2.0 UVC 1.3M WebCam (13d3:5071) [ 12.782101] input: USB2.0 UVC 1.3M WebCam as /devices/pci0000:00/0000:00:1d.7/usb1/1-7/1-7:1.0/input/input4 [ 12.782784] usbcore: registered new interface driver uvcvideo [ 12.782796] USB Video Class driver (1.1.1) [ 12.859765] psb_gfx: module is from the staging directory, the quality is unknown, you have been warned. [ 12.879880] Bluetooth: Core ver 2.16 [ 12.879989] NET: Registered protocol family 31 [ 12.879999] Bluetooth: HCI device and connection manager initialized [ 12.880045] Bluetooth: HCI socket layer initialized [ 12.880054] Bluetooth: L2CAP socket layer initialized [ 12.880079] Bluetooth: SCO socket layer initialized [ 12.893784] gma500 0000:00:02.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22 [ 12.893803] gma500 0000:00:02.0: setting latency timer to 64 [ 12.894790] ioremap error for 0x7f66e000-0x7f671000, requested 0x10, got 0x0 [ 12.895457] Stolen memory information [ 12.895468] base in RAM: 0x7f800000 [ 12.895476] size: 7932K, calculated by (GTT RAM base) - (Stolen base), seems wrong [ 12.895486] the correct size should be: 8M(dvmt mode=3) [ 12.900591] Set up 1983 stolen pages starting at 0x7f800000, GTT offset 0K [ 12.900829] [drm] SGX core id = 0x01130000 ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21 Uname: Linux 3.2.0-27-generic i686 ApportVersion: 2.0.1-0ubuntu11 Architecture: i386 Date: Sat Aug 4 21:07:58 2012 InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1033052/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
