Have the same problem with ThinkPad W520: # lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF108GLM [Quadro 1000M] (rev a1)
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to bbswitch in Ubuntu. https://bugs.launchpad.net/bugs/1338404 Title: bbswitch: fails to find ACPI handle for discrete card Status in “bbswitch” package in Ubuntu: Confirmed Bug description: Hi, I have a GeForce 9600 GT discrete card providing a third monitor on my 14.04 Trusty system. The first two monitors are connected to the onboard Intel i7-3770 HD graphics. This is a contiunation of launchpad bug #1310023, where Alberto Milone wrote: """ @Hamish: that is a problem with bbswitch: [ 17.706791] bbswitch: cannot find ACPI handle for VGA device 0000:01:00.0 [ 17.706792] bbswitch: No discrete VGA device found Please file a bug report against bbswitch. """ You can find full debug logs in ticket #1310023, but briefly, bbswitch-dkms package version 0.7-2ubuntu1 dmesg: """ [ 17.693825] bbswitch: version 0.7 [ 17.693830] bbswitch: Found integrated VGA device 0000:00:02.0: \_SB_.PCI0.GFX0 [ 17.693844] bbswitch: cannot find ACPI handle for VGA device 0000:01:00.0 [ 17.693845] bbswitch: No discrete VGA device found [ 17.706786] bbswitch: version 0.7 [ 17.706789] bbswitch: Found integrated VGA device 0000:00:02.0: \_SB_.PCI0.GFX0 [ 17.706791] bbswitch: cannot find ACPI handle for VGA device 0000:01:00.0 [ 17.706792] bbswitch: No discrete VGA device found """ $ lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation G94 [GeForce 9600 GT] (rev a1) fyi as per the previous ticket I upgraded ubuntu-drivers-common to version 1:0.2.91.6 from trusty-proposed, but as in comment 23 there the same "cannot find ACPI handle" was present in dmesg before upgrading that package. The machine is dual boot with Windows 7, on the Windows side of things the three monitor setup works fine. ? thanks, Hamish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bbswitch/+bug/1338404/+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
