affects me too.. I have NVIDIA® Quadro® K2100M Graphics 2GB GDDR5 on my config. While installing ubuntu, it complains of following..
nouveau E [DRM] failed to idle channel 0xcccc0000 [DRM] xhci_hcd 0000:00:14.0: HC died: cleaning up INFO: rcu_sched detected stails on CPUs/tasks: { 2} (detected by 0, t=150002 jiffies, g=324, c=323, q=0) BUG: soft lockup - CPU#0 stuck for 22s! [khubd:74] BUG: soft lockup - CPU#0 stuck for 22s! [scsi_id:1042] ...series of the last two lines.... INFO: task kworker/2:1:83 blocked for more than 120 seconds. Tainted: G W 3.16.0.30-generic #40~04.1-Ubuntu "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message ...again the above message continues randomly starting from INFO: rcu_sched ....... -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-lts-raring in Ubuntu. https://bugs.launchpad.net/bugs/1097178 Title: nouveau failed to idle channel 0xcccc0000 Status in linux-lts-raring package in Ubuntu: Invalid Bug description: Hi, With Kernel 3.7.* and 3.8rc1 and rc2 I have this error Jan 8 09:05:21 pcpoil kernel: [407794.764008] nouveau E[ 1442] failed to idle channel 0xcccc0000 Jan 8 09:05:23 pcpoil kernel: [407796.764446] nouveau W[PCIEGART][0000:01:00.0] flush timeout, 0x00000002 Jan 8 09:05:25 pcpoil kernel: [407798.764540] nouveau W[PCIEGART][0000:01:00.0] flush timeout, 0x00000002 Jan 8 09:05:27 pcpoil kernel: [407800.764586] nouveau W[PCIEGART][0000:01:00.0] flush timeout, 0x00000002 Jan 8 09:05:27 pcpoil kernel: [407800.768002] [sched_delayed] sched: RT throttling activated The system become instable, and I need to reboot. It was working fine with kernel 3.5 Kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline on Ubuntu 12.10 VGA : 01:00.0 VGA compatible controller: NVIDIA Corporation NV43 [GeForce 6600 GT] (rev a2) dpkg -l |grep nouveau libdrm-nouveau1a:amd64 2.4.40+git20130104.baf0a7da-0ubuntu0ricotz~quantal amd64 libdrm-nouveau2:amd64 2.4.40+git20130104.baf0a7da-0ubuntu0ricotz~quantal amd64 xserver-xorg-video-nouveau 1:1.0.6+git20130107.8f934fad-0ubuntu0sarvatt~quantal amd64 uname -a Linux pcpoil 3.7.0-7-generic #15-Ubuntu SMP Sat Dec 15 16:34:25 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux Best regards, To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-raring/+bug/1097178/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp