Martin Pool, thank you for reporting this bug and helping make Ubuntu better. This bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? Can you try with the latest development release of Ubuntu? ISO CD images are available from http://cdimage.ubuntu.com/releases/ .
If it remains an issue, could you run the following command in the development release from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report. apport-collect -p linux <replace-with-bug-number> Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream- testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results. Thanks in advance. ** Summary changed: - soft lockup in find_audio_control_unit+0x2c/0x6 [snd_usb_audio]0 + BUG: soft lockup - CPU#0 stuck for 61s! [modprobe:8108]; RIP: 0010:[<ffffffffa03e07c0>] [<ffffffffa03e07c0>] snd_usb_find_desc+0x30/0x80 [snd_usb_audio] ** Tags added: kernel-bug ** Tags added: maverick needs-upstream-testing ** Description changed: I have a soundblaster usb-audio device that has previously been working well. Due to a hardware failure I've recently changed this machine to an AMD 6-core processor and a GA-890GPA-UD3H motherboard, and also installed the latest Lucid upgrades. When I insert the USB device I now get the following dmesg. lsusb and apport both hang. (Which is why I'm not reporting this through apport.) + WORKAROUND: If I connect this device to a USB2.0/1.1 port then it works. [ 5506.148891] BUG: soft lockup - CPU#0 stuck for 61s! [modprobe:8108] [ 5506.148897] Modules linked in: snd_usb_audio(+) snd_pcm_oss snd_mixer_oss snd_pcm snd_page_alloc snd_hwdep snd_usbmidi_lib snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore cryptd aes_x86_64 aes_generic binfmt_misc ppdev parport_pc vmblock vmmon dm_crypt usb_storage xt_comment ipt_LOG xt_limit xt_tcpudp ipt_addrtype xt_state ipt_REJECT ip6table_filter ip6_tables nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables serio_raw pcspkr edac_core edac_mce_amd i2c_piix4 xhci shpchp lp parport raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov usbhid hid raid6_pq async_tx raid0 multipath linear raid1 fbcon tileblit font bitblit softcursor vga16fb vgastate radeon ttm drm_kms_helper ohci1394 ieee1394 drm i2c_algo_bit pata_jmicron ahci r8169 mii [ 5506.149007] CPU 0: [ 5506.149010] Modules linked in: snd_usb_audio(+) snd_pcm_oss snd_mixer_oss snd_pcm snd_page_alloc snd_hwdep snd_usbmidi_lib snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device snd soundcore cryptd aes_x86_64 aes_generic binfmt_misc ppdev parport_pc vmblock vmmon dm_crypt usb_storage xt_comment ipt_LOG xt_limit xt_tcpudp ipt_addrtype xt_state ipt_REJECT ip6table_filter ip6_tables nf_nat_irc nf_conntrack_irc nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ftp nf_conntrack iptable_filter ip_tables x_tables serio_raw pcspkr edac_core edac_mce_amd i2c_piix4 xhci shpchp lp parport raid10 raid456 async_pq async_xor xor async_memcpy async_raid6_recov usbhid hid raid6_pq async_tx raid0 multipath linear raid1 fbcon tileblit font bitblit softcursor vga16fb vgastate radeon ttm drm_kms_helper ohci1394 ieee1394 drm i2c_algo_bit pata_jmicron ahci r8169 mii [ 5506.149113] Pid: 8108, comm: modprobe Not tainted 2.6.32-23-generic #37-Ubuntu GA-890GPA-UD3H [ 5506.149118] RIP: 0010:[<ffffffffa03e07c0>] [<ffffffffa03e07c0>] snd_usb_find_desc+0x30/0x80 [snd_usb_audio] [ 5506.149145] RSP: 0018:ffff8800376df968 EFLAGS: 00000216 [ 5506.149149] RAX: ffff8801f59f8c57 RBX: ffff8800376df968 RCX: 0000000000000024 [ 5506.149154] RDX: ffff8801f59f8c57 RSI: ffff8801f59f8c76 RDI: ffff8801f59f8c12 [ 5506.149159] RBP: ffffffff81013cae R08: ffff8801f59f8c1c R09: 0000000000000001 [ 5506.149164] R10: 0000000000000009 R11: 0000000000000001 R12: ffff8801f59f8c60 [ 5506.149169] R13: ffff8801f59f8c66 R14: 0000000000000001 R15: 0000000000000001 [ 5506.149175] FS: 00007f3b222c1700(0000) GS:ffff880028200000(0000) knlGS:00000000ed9c9b70 [ 5506.149181] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 5506.149185] CR2: 00007f9535193ce8 CR3: 00000000cfb97000 CR4: 00000000000006f0 [ 5506.149190] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 5506.149195] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 5506.149199] Call Trace: [ 5506.149219] [<ffffffffa03d6f5c>] ? find_audio_control_unit+0x2c/0x60 [snd_usb_audio] [ 5506.149238] [<ffffffffa03d6fdb>] ? check_input_term+0x4b/0x2d0 [snd_usb_audio] [ 5506.149256] [<ffffffffa03d9248>] ? parse_audio_unit+0x6f8/0xef0 [snd_usb_audio] [ 5506.149267] [<ffffffff812b3d64>] ? idr_get_empty_slot+0xc4/0x180 [ 5506.149286] [<ffffffffa03d8cbb>] ? parse_audio_unit+0x16b/0xef0 [snd_usb_audio] [ 5506.149294] [<ffffffff8115ab90>] ? iput+0x30/0x70 [ 5506.149302] [<ffffffff811afe4e>] ? sysfs_addrm_finish+0x4e/0x150 [ 5506.149309] [<ffffffff811b031c>] ? sysfs_add_one+0x2c/0x130 [ 5506.149316] [<ffffffff815463c6>] ? notifier_call_chain+0x56/0x80 [ 5506.149335] [<ffffffffa03d9b47>] ? snd_usb_mixer_controls+0x107/0x190 [snd_usb_audio] [ 5506.149353] [<ffffffffa03d9c75>] ? snd_usb_create_mixer+0xa5/0x2a0 [snd_usb_audio] [ 5506.149372] [<ffffffffa03d9ca1>] ? snd_usb_create_mixer+0xd1/0x2a0 [snd_usb_audio] [ 5506.149390] [<ffffffffa03d63b1>] ? snd_usb_create_stream+0x141/0x1a0 [snd_usb_audio] [ 5506.149408] [<ffffffffa03d6693>] ? usb_audio_probe+0x283/0x8c0 [snd_usb_audio] [ 5506.149417] [<ffffffff813db1b5>] ? usb_probe_interface+0xe5/0x1d0 [ 5506.149425] [<ffffffff8136ac25>] ? really_probe+0x65/0x170 [ 5506.149432] [<ffffffff8136ad75>] ? driver_probe_device+0x45/0x70 [ 5506.149438] [<ffffffff8136ae3b>] ? __driver_attach+0x9b/0xa0 [ 5506.149448] [<ffffffff8136ada0>] ? __driver_attach+0x0/0xa0 [ 5506.149454] [<ffffffff8136a088>] ? bus_for_each_dev+0x68/0x90 [ 5506.149460] [<ffffffff8136aa9e>] ? driver_attach+0x1e/0x20 [ 5506.149466] [<ffffffff8136a35e>] ? bus_add_driver+0xde/0x280 [ 5506.149472] [<ffffffff8136b170>] ? driver_register+0x80/0x150 [ 5506.149478] [<ffffffff815463c6>] ? notifier_call_chain+0x56/0x80 [ 5506.149485] [<ffffffff813daee8>] ? usb_register_driver+0xb8/0x130 [ 5506.149503] [<ffffffffa03f1000>] ? snd_usb_audio_init+0x0/0x43 [snd_usb_audio] [ 5506.150703] [<ffffffffa03f1041>] ? snd_usb_audio_init+0x41/0x43 [snd_usb_audio] [ 5506.150703] [<ffffffff8100a04c>] ? do_one_initcall+0x3c/0x1a0 [ 5506.150703] [<ffffffff810a1a5f>] ? sys_init_module+0xdf/0x260 [ 5506.150703] [<ffffffff810131b2>] ? system_call_fastpath+0x16/0x1b - --- + --- AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory AplayDevices: aplay: device_list:235: no soundcards found... Architecture: amd64 ArecordDevices: arecord: device_list:235: no soundcards found... DistroRelease: Ubuntu 10.10 EcryptfsInUse: Yes MachineType: Gigabyte Technology Co., Ltd. GA-890GPA-UD3H Package: linux (not installed) ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.35-6-generic root=/dev/mapper/vg_main-maverick_64 ro single clock=hpet ProcEnviron: - PATH=(custom, user) - LANG=en_AU.utf8 - SHELL=/bin/zsh + PATH=(custom, user) + LANG=en_AU.utf8 + SHELL=/bin/zsh ProcVersionSignature: Ubuntu 2.6.35-6.8-generic 2.6.35-rc3 Regression: No Reproducible: Yes Tags: maverick needs-upstream-testing Uname: Linux 2.6.35-6-generic x86_64 UserGroups: adm admin audio cdrom dialout lpadmin plugdev pulse pulse-access sambashare dmi.bios.date: 05/04/2010 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F7c dmi.board.name: GA-890GPA-UD3H dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.board.version: x.x dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF7c:bd05/04/2010:svnGigabyteTechnologyCo.,Ltd.:pnGA-890GPA-UD3H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-890GPA-UD3H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: GA-890GPA-UD3H dmi.sys.vendor: Gigabyte Technology Co., Ltd. ** Tags added: lucid ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/597919 Title: BUG: soft lockup - CPU#0 stuck for 61s! [modprobe:8108]; RIP: 0010:[<ffffffffa03e07c0>] [<ffffffffa03e07c0>] snd_usb_find_desc+0x30/0x80 [snd_usb_audio] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/597919/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
