Hi! I have the same problem I think. My PC is a Acer 8943G laptop. It stops in the middle of the boot after about 25 sec with a BUG when using the Linux version 2.6.38-8-generic (buildd@allspice) (gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu3) ) #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 (Ubuntu 2.6.38-8.42-generic 2.6.38.2) kernel.
If I boot with the Linux version 2.6.35-28-generic (buildd@allspice) (gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5) ) #50-Ubuntu SMP Fri Mar 18 18:42:20 UTC 2011 (Ubuntu 2.6.35-28.50-generic 2.6.35.11) kernel it boot well. I have attached kern.log with the boot processes failing and the one who works ok as well as :sudo lshw -C display ; lsb_release -a ; uname -a (after a ok boot with 2.6.35-28-generic) *-display description: VGA compatible controller product: Broadway PRO [Mobility Radeon HD 5800 Series] vendor: ATI Technologies Inc physical id: 0 bus info: pci@0000:01:00.0 version: 00 width: 64 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom configuration: driver=radeon latency=0 resources: irq:48 memory:f0000000-f7ffffff memory:f8500000-f851ffff ioport:2000(size=256) memory:f8540000-f855ffff *-display description: VGA compatible controller product: Core Processor Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 12 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:45 memory:f8000000-f83fffff memory:d0000000-dfffffff ioport:1800(size=8) No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 11.04 Release: 11.04 Codename: natty Linux mbr-laptop 2.6.35-28-generic #50-Ubuntu SMP Fri Mar 18 18:42:20 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux ** Attachment added: "kern.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/775462/+attachment/2107267/+files/kern.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/775462 Title: [Arrandale] Xorg freeze (hybrid graphics) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs