I also experience this problem. I've been having it for a while. Logging out and logging in again temporarily fixes the issue. Affects both KDE and Gnome. Got this in /var/log/syslog when the problem happened just now:
Mar 31 21:57:54 dreadnought kernel: [ 2390.058249] irq 16: nobody cared (try booting with the "irqpoll" option) Mar 31 21:57:54 dreadnought kernel: [ 2390.058253] CPU: 0 PID: 0 Comm: swapper/0 Tainted: PF O 3.11.0-18-generic #32-Ubuntu Mar 31 21:57:54 dreadnought kernel: [ 2390.058254] Hardware name: System manufacturer System Product Name/P8P67-M, BIOS 1501 08/30/2011 Mar 31 21:57:54 dreadnought kernel: [ 2390.058255] ffff880400974c9c ffff880417403e68 ffffffff816e8571 ffff880400974c00 Mar 31 21:57:54 dreadnought kernel: [ 2390.058257] ffff880417403e90 ffffffff810f88e2 ffff880400974c00 0000000000000010 Mar 31 21:57:54 dreadnought kernel: [ 2390.058259] 0000000000000000 ffff880417403ed0 ffffffff810f8d11 ffffffff815a158f Mar 31 21:57:54 dreadnought kernel: [ 2390.058261] Call Trace: Mar 31 21:57:54 dreadnought kernel: [ 2390.058262] <IRQ> [<ffffffff816e8571>] dump_stack+0x45/0x56 Mar 31 21:57:54 dreadnought kernel: [ 2390.058270] [<ffffffff810f88e2>] __report_bad_irq+0x32/0xd0 Mar 31 21:57:54 dreadnought kernel: [ 2390.058271] [<ffffffff810f8d11>] note_interrupt+0x141/0x200 Mar 31 21:57:54 dreadnought kernel: [ 2390.058274] [<ffffffff815a158f>] ? cpuidle_enter_state+0x4f/0xc0 Mar 31 21:57:54 dreadnought kernel: [ 2390.058276] [<ffffffff810f6681>] handle_irq_event_percpu+0xe1/0x1e0 Mar 31 21:57:54 dreadnought kernel: [ 2390.058277] [<ffffffff810f67bf>] handle_irq_event+0x3f/0x60 Mar 31 21:57:54 dreadnought kernel: [ 2390.058279] [<ffffffff810f988a>] handle_fasteoi_irq+0x5a/0x100 Mar 31 21:57:54 dreadnought kernel: [ 2390.058283] [<ffffffff81014b8e>] handle_irq+0x1e/0x30 Mar 31 21:57:54 dreadnought kernel: [ 2390.058285] [<ffffffff816fa70d>] do_IRQ+0x4d/0xc0 Mar 31 21:57:54 dreadnought kernel: [ 2390.058287] [<ffffffff816efd6d>] common_interrupt+0x6d/0x6d Mar 31 21:57:54 dreadnought kernel: [ 2390.058288] <EOI> [<ffffffff815a158f>] ? cpuidle_enter_state+0x4f/0xc0 Mar 31 21:57:54 dreadnought kernel: [ 2390.058291] [<ffffffff815a1588>] ? cpuidle_enter_state+0x48/0xc0 Mar 31 21:57:54 dreadnought kernel: [ 2390.058293] [<ffffffff815a16c9>] cpuidle_idle_call+0xc9/0x210 Mar 31 21:57:54 dreadnought kernel: [ 2390.058295] [<ffffffff8101bafe>] arch_cpu_idle+0xe/0x30 Mar 31 21:57:54 dreadnought kernel: [ 2390.058298] [<ffffffff810b5825>] cpu_startup_entry+0xe5/0x280 Mar 31 21:57:54 dreadnought kernel: [ 2390.058300] [<ffffffff816d7767>] rest_init+0x77/0x80 Mar 31 21:57:54 dreadnought kernel: [ 2390.058303] [<ffffffff81d26ef7>] start_kernel+0x40a/0x416 Mar 31 21:57:54 dreadnought kernel: [ 2390.058305] [<ffffffff81d268f6>] ? repair_env_string+0x5c/0x5c Mar 31 21:57:54 dreadnought kernel: [ 2390.058307] [<ffffffff81d26120>] ? early_idt_handlers+0x120/0x120 Mar 31 21:57:54 dreadnought kernel: [ 2390.058309] [<ffffffff81d265de>] x86_64_start_reservations+0x2a/0x2c Mar 31 21:57:54 dreadnought kernel: [ 2390.058310] [<ffffffff81d266e8>] x86_64_start_kernel+0x108/0x117 Mar 31 21:57:54 dreadnought kernel: [ 2390.058311] handlers: Mar 31 21:57:54 dreadnought kernel: [ 2390.058323] [<ffffffffa0064490>] e1000_intr [e1000] Mar 31 21:57:54 dreadnought kernel: [ 2390.058373] [<ffffffffa0797a70>] nv_kern_isr [nvidia] Mar 31 21:57:54 dreadnought kernel: [ 2390.058374] Disabling IRQ #16 willz@dreadnought:/proc$ cat interrupts | grep 16: 16: 600008 0 0 0 IO-APIC-fasteoi eth1, nvidia willz@dreadnought:/var/log$ uname -a Linux dreadnought 3.11.0-18-generic #32-Ubuntu SMP Tue Feb 18 21:11:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux willz@dreadnought:/var/log$ nvidia-settings -v /usr/share/themes/Blumix1.0/gtk-2.0/gtkrc:580: Unable to locate image file in pixmap_path: "transparent_dot.png" /usr/share/themes/Blumix1.0/gtk-2.0/gtkrc:583: Background image options specified without filename nvidia-settings: version 304.88 (buildd@panlong) Thu Jul 11 10:40:14 UTC 2013 The NVIDIA X Server Settings tool. This program is used to configure the NVIDIA Linux graphics driver. For more detail, please see the nvidia-settings(1) man page. Copyright (C) 2004 - 2010 NVIDIA Corporation. Let me know if you want more information. This issue bugs me a lot. -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/996008 Title: GUI slows down significantly after random period of time. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/996008/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : [email protected] Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp
