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[Launchpad Bug Tracker <887993@xxxxxxxxxxxxxxxxxx>]

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after resuming from suspend unity/ compiz feels like it renders much less frames per second. Moving windows around is very jerky as are the animations of the sidebar.
While moving around a window the Xorg CPU utilization spikes to 48%, so its eating up one of my 2 cores.

logging out and logging in again solves the problem. Switching to VTs
however does not.

furthermore I got this on my kernel log:

Nov  9 11:51:32 deepblue kernel: [39839.124572] ------------[ cut here ]------------
Nov  9 11:51:32 deepblue kernel: [39839.124580] WARNING: at /build/buildd/linux-3.0.0/kernel/power/suspend_test.c:53 suspend_test_finish+0x89/0x90()
Nov  9 11:51:32 deepblue kernel: [39839.124582] Hardware name: 2007FVG
Nov  9 11:51:32 deepblue kernel: [39839.124584] Component: resume devices, time: 10812
Nov  9 11:51:32 deepblue kernel: [39839.124587] Modules linked in: bnep rfcomm parport_pc ppdev binfmt_misc joydev snd_hda_codec_analog pcmcia snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi hdj_mod btusb arc4 bluetooth snd_rawmidi snd_seq_midi_event ath9k yenta_socket psmouse pcmcia_rsrc serio_raw pcmcia_core mac80211 ath9k_common snd_seq ath9k_hw thinkpad_acpi nvram nsc_ircc irda ath radeon snd_timer snd_seq_device crc_ccitt tpm_tis cfg80211 video snd ttm drm_kms_helper drm i2c_algo_bit soundcore snd_page_alloc lp parport usbhid hid ahci libahci xhci_hcd e1000e btrfs zlib_deflate libcrc32c
Nov  9 11:51:32 deepblue kernel: [39839.124644] Pid: 20240, comm: pm-suspend Not tainted 3.0.0-13-generic #22-Ubuntu
Nov  9 11:51:32 deepblue kernel: [39839.124646] Call Trace:
Nov  9 11:51:32 deepblue kernel: [39839.124652]  [<c1047982>] warn_slowpath_common+0x72/0xa0
Nov  9 11:51:32 deepblue kernel: [39839.124666]  [<c1084af9>] ? suspend_test_finish+0x89/0x90
Nov  9 11:51:32 deepblue kernel: [39839.124670]  [<c1084af9>] ? suspend_test_finish+0x89/0x90
Nov  9 11:51:32 deepblue kernel: [39839.124674]  [<c1047a53>] warn_slowpath_fmt+0x33/0x40
Nov  9 11:51:32 deepblue kernel: [39839.124678]  [<c1084af9>] suspend_test_finish+0x89/0x90
Nov  9 11:51:32 deepblue kernel: [39839.124681]  [<c108483a>] suspend_devices_and_enter+0xba/0x180
Nov  9 11:51:32 deepblue kernel: [39839.124685]  [<c10849fe>] enter_state+0xfe/0x130
Nov  9 11:51:32 deepblue kernel: [39839.124688]  [<c1083f4a>] state_store+0x8a/0xc0
Nov  9 11:51:32 deepblue kernel: [39839.124692]  [<c1083ec0>] ? pm_trace_dev_match_show+0x20/0x20
Nov  9 11:51:32 deepblue kernel: [39839.124697]  [<c127eecb>] kobj_attr_store+0x1b/0x30
Nov  9 11:51:32 deepblue kernel: [39839.124702]  [<c1185656>] sysfs_write_file+0xa6/0x100
Nov  9 11:51:32 deepblue kernel: [39839.124716]  [<c112876f>] vfs_write+0x8f/0x160
Nov  9 11:51:32 deepblue kernel: [39839.124719]  [<c11855b0>] ? sysfs_poll+0x80/0x80
Nov  9 11:51:32 deepblue kernel: [39839.124723]  [<c1128a4d>] sys_write+0x3d/0x70
Nov  9 11:51:32 deepblue kernel: [39839.124727]  [<c152cc24>] syscall_call+0x7/0xb
Nov  9 11:51:32 deepblue kernel: [39839.124730] ---[ end trace 307b324cec6bf296 ]---

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: performance
-- 
desktop sluggish after resume from suspend
https://bugs.launchpad.net/bugs/887993
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