Public bug reported:
i'm developing with usb microcontrollers and sometimes they are buggy. ;)
normally my system (thinkpad t410s) hibernates and resumes fairly well.
but i discovered today that this is not the case when usb devices dont
enumerate correctly. the resume process times out then, aborts and a normal
startup is being forced. this is with maverick's kernel version 2.6.35-27.48. i
dont know the details about "thawing" usb devices, but it seems odd to me that
they are important enough to produce a resuming abort.
the important part of dmesg:
[ 10.766509] PM: Starting manual resume from disk
[ 10.766528] PM: Resume from partition 252:1
[ 10.766529] PM: Checking hibernation image.
[ 10.767870] PM: Signature found, resuming
[ 10.770863] PM: Marking nosave pages: 000000000009e000 - 0000000000100000
[ 10.770866] PM: Marking nosave pages: 00000000bb27c000 - 00000000bb282000
[ 10.770868] PM: Marking nosave pages: 00000000bb35f000 - 00000000bb40f000
[ 10.770871] PM: Marking nosave pages: 00000000bb46f000 - 00000000bb70f000
[ 10.770879] PM: Marking nosave pages: 00000000bb717000 - 00000000bb71f000
[ 10.770881] PM: Marking nosave pages: 00000000bb76b000 - 00000000bb7ff000
[ 10.770883] PM: Marking nosave pages: 00000000bb800000 - 0000000100000000
[ 10.771611] PM: Basic memory bitmaps created
[ 10.771612] PM: Preparing processes for restore.
[ 10.771613] Freezing user space processes ... (elapsed 0.01 seconds) done.
[ 10.784553] Freezing remaining freezable tasks ...
[ 11.263643] usb 1-1.2.7: device not accepting address 8, error -32
[ 11.343727] usb 1-1.2.7: new full speed USB device using ehci_hcd and
address 9
[ 21.644688] usb 1-1.2.7: device not accepting address 9, error -32
[ 21.724700] usb 1-1.2.7: new full speed USB device using ehci_hcd and
address 10
[ 30.768038]
[ 30.768059] Freezing of tasks failed after 20.01 seconds (1 tasks refusing
to freeze):
[ 30.768122] khubd D 00000000ffff9520 0 43 2 0x00800000
[ 30.768179] ffff8801322c7960 0000000000000046 ffff880100000000
0000000000015980
[ 30.768224] ffff8801322c7fd8 0000000000015980 ffff8801322c7fd8
ffff8801322aadc0
[ 30.768267] 0000000000015980 0000000000015980 ffff8801322c7fd8
0000000000015980
[ 30.768311] Call Trace:
[ 30.768330] [<ffffffff815895e5>] schedule_timeout+0x195/0x310
[ 30.768359] [<ffffffff81070620>] ? process_timeout+0x0/0x10
[ 30.768384] [<ffffffff8158925b>] wait_for_common+0xdb/0x180
[ 30.768409] [<ffffffff810572f0>] ? default_wake_function+0x0/0x20
[ 30.768436] [<ffffffff81407c7a>] ? usb_hcd_submit_urb+0x7a/0x190
[ 30.768461] [<ffffffff815893b3>] wait_for_completion_timeout+0x13/0x20
[ 30.768487] [<ffffffff81409643>] usb_start_wait_urb+0xd3/0x100
[ 30.768512] [<ffffffff81408928>] ? usb_init_urb+0x28/0x40
[ 30.768535] [<ffffffff81409cbe>] usb_control_msg+0xee/0x180
[ 30.768559] [<ffffffff8140a7ca>] usb_get_descriptor+0x8a/0xd0
[ 30.768584] [<ffffffff8140a8b5>] usb_get_device_descriptor+0xa5/0xd0
[ 30.768610] [<ffffffff814018bd>] hub_port_init+0x30d/0x890
[ 30.768635] [<ffffffff8138fd7c>] ? device_pm_init+0x4c/0x60
[ 30.768659] [<ffffffff81402eb6>] hub_port_connect_change+0x326/0xa40
[ 30.768685] [<ffffffff81404742>] hub_events+0x332/0x580
[ 30.768708] [<ffffffff81588bcf>] ? schedule+0x3df/0x830
[ 30.768731] [<ffffffff814049e5>] hub_thread+0x55/0x190
[ 30.768754] [<ffffffff8107fab0>] ? autoremove_wake_function+0x0/0x40
[ 30.768779] [<ffffffff81404990>] ? hub_thread+0x0/0x190
[ 30.768802] [<ffffffff8107f556>] kthread+0x96/0xa0
[ 30.768824] [<ffffffff8100aee4>] kernel_thread_helper+0x4/0x10
[ 30.768848] [<ffffffff8107f4c0>] ? kthread+0x0/0xa0
[ 30.768870] [<ffffffff8100aee0>] ? kernel_thread_helper+0x0/0x10
[ 30.768898]
[ 30.768909] Restarting tasks ... done.
[ 30.768981] PM: Basic memory bitmaps freed
[ 30.768985] video LNXVIDEO:00: Restoring backlight state
[ 30.941118] PM: Resume from disk failed.
[ 30.957972] EXT4-fs (dm-2): INFO: recovery required on readonly filesystem
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/730523
Title:
fails to resume when usb device doesnt accept address
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