I am currently experiencing the issue described by Garri. Any fix or workaround yet?
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1210470 Title: Switching to integrated card with vgaswitcheroo makes the kernel to hang, until pulseaudio is killed Status in The Linux Kernel: Confirmed Status in “pulseaudio” package in Ubuntu: Confirmed Bug description: I have a dual-GPU notebook, with a Intel Ironlake integrated GPU and a AMD 5650m dedicated GPU (muxed system). The AMD gpu is also connected to an HDMI port that implies an audio card (I'm running radeon module with radeon.audio=1). If I switch to the integrated card after that the UI is up and pulseaudio is loaded, as soon as I exit from lightdm (both to reload X or to shutdown the PC) the kernel hangs (both in 12.10, 13.04 and 13.10): [ 489.177732] hda-intel 0000:01:00.1: Disabling via VGA-switcheroo [ 489.297129] hda-intel 0000:01:00.1: Cannot lock devices! [ 489.297139] radeon: switched off [ 489.300356] [drm] Disabling audio support [ 489.319552] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x000000000015e418 and cpu addr 0xffffc90009df0418 [ 489.973886] ACPI: \_SB_.PCI0: ACPI_NOTIFY_BUS_CHECK event: unsupported [ 489.973903] _handle_hotplug_event_root: Bus check notify on \_SB_.PCI0 [ 678.992375] [drm:atom_op_jump] *ERROR* atombios stuck in loop for more than 5secs aborting [ 678.992453] [drm:atom_execute_table_locked] *ERROR* atombios stuck executing CD0C (len 62, WS 0, PS 0) @ 0xCD28 [ 683.996303] [drm:atom_op_jump] *ERROR* atombios stuck in loop for more than 5secs aborting [ 683.996377] [drm:atom_execute_table_locked] *ERROR* atombios stuck executing CD0C (len 62, WS 0, PS 0) @ 0xCD28 [ 683.996453] [drm:atom_execute_table_locked] *ERROR* atombios stuck executing C3DC (len 871, WS 0, PS 0) @ 0xC439 [ 689.000275] [drm:atom_op_jump] *ERROR* atombios stuck in loop for more than 5secs aborting [ 689.000349] [drm:atom_execute_table_locked] *ERROR* atombios stuck executing CD0C (len 62, WS 0, PS 0) @ 0xCD28 [ 694.004285] [drm:atom_op_jump] *ERROR* atombios stuck in loop for more than 5secs aborting [ 694.004363] [drm:atom_execute_table_locked] *ERROR* atombios stuck executing CD0C (len 62, WS 0, PS 0) @ 0xCD28 [ 699.008330] [drm:atom_op_jump] *ERROR* atombios stuck in loop for more than 5secs aborting [ 699.008414] [drm:atom_execute_table_locked] *ERROR* atombios stuck executing CD0C (len 62, WS 0, PS 0) @ 0xCD28 [ 699.514458] init: tty1 main process (2460) killed by QUIT signal [ 699.514489] init: tty1 main process ended, respawning [ 704.012405] [drm:atom_op_jump] *ERROR* atombios stuck in loop for more than 5secs aborting [ 704.012492] [drm:atom_execute_table_locked] *ERROR* atombios stuck executing CD0C (len 62, WS 0, PS 0) @ 0xCD28 [ 709.016515] [drm:atom_op_jump] *ERROR* atombios stuck in loop for more than 5secs aborting [ 709.016596] [drm:atom_execute_table_locked] *ERROR* atombios stuck executing CD0C (len 62, WS 0, PS 0) @ 0xCD28 At the contrary, if once lightdm starts I go to tty1 → sudo service lighdm stop → sudo killall pulseaudio → echo OFF| sudo tee /sys/kernel/debug/vgaswitcheroo/switch #switch to integrated card Everything works well instead. So it seems that pulseaudio should disable the powered-off card on switch (or is this something that the kernel should do?). To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1210470/+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
