usb 5-1: device descriptor read/64, error -71 usb 1-1: USB disconnect, device number 82 pvrusb2: Invalid write control endpoint usb 4-1: config 0 descriptor?? pvrusb2: Invalid write control endpoint pvrusb2: WARNING: Detected a wedged cx25840 chip; the device will not work. pvrusb2: WARNING: Try power cycling the pvrusb2 device. pvrusb2: WARNING: Disabling further access to the device to prevent other foul-ups. pvrusb2: Device being rendered inoperable cx25840 0-0044: Unable to detect h/w, assuming cx23887 cx25840 0-0044: cx23887 A/V decoder found @ 0x88 (pvrusb2_a) pvrusb2: Attached sub-driver cx25840 pvrusb2: Attempted to execute control transfer when device not ok pvrusb2: Attempted to execute control transfer when device not ok pvrusb2: Attempted to execute control transfer when device not ok pvrusb2: Attempted to execute control transfer when device not ok pvrusb2: Module ID 4 (tuner) for device Gotview USB 2.0 DVD Deluxe failed to load. Possible missing sub-device kernel module or initialization failure within module. pvrusb2: Attempted to execute control transfer when device not ok tda9887 0-0043: creating new instance tda9887 0-0043: tda988[5/6/7] found pvrusb2: Attempted to execute control transfer when device not ok tda9887 0-0043: i2c i/o error: rc == -5 (should be 4) tuner: 0-0043: Tuner 74 found with type(s) Radio TV. pvrusb2: Attached sub-driver tuner pvrusb2: ***WARNING*** pvrusb2 driver initialization failed due to the failure of one or more sub-device kernel modules. pvrusb2: You need to resolve the failing condition before this driver can function. There should be some earlier messages giving more information about the problem. ------------[ cut here ]------------ sysfs group 'power' not found for kobject '0-0043' WARNING: CPU: 0 PID: 585 at fs/sysfs/group.c:254 sysfs_remove_group fs/sysfs/group.c:254 [inline] WARNING: CPU: 0 PID: 585 at fs/sysfs/group.c:254 sysfs_remove_group+0x15a/0x1b0 fs/sysfs/group.c:245 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 585 Comm: pvrusb2-context Not tainted 5.1.0-rc5-319617-gd34f951 #4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xe8/0x16e lib/dump_stack.c:113 panic+0x29d/0x5f2 kernel/panic.c:214 __warn.cold+0x20/0x48 kernel/panic.c:571 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x130/0x1f0 arch/x86/kernel/traps.c:272 do_invalid_op+0x37/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:sysfs_remove_group fs/sysfs/group.c:254 [inline] RIP: 0010:sysfs_remove_group+0x15a/0x1b0 fs/sysfs/group.c:245 Code: 48 89 d9 49 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 c1 e9 03 80 3c 01 00 75 41 48 8b 33 48 c7 c7 e0 34 7a 8e e8 66 8f 6e ff <0f> 0b eb 95 e8 dd a2 d3 ff e9 d2 fe ff ff 48 89 df e8 d0 a2 d3 ff RSP: 0018:ffff88809d10fb70 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffffff8f038900 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815b1d22 RDI: ffffed1013a21f60 RBP: 0000000000000000 R08: ffff88809d434980 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88807a5099b0 R13: ffffffff8f038fa0 R14: 1ffff11013a21f97 R15: ffff88807a5099a8 dpm_sysfs_remove+0xa2/0xc0 drivers/base/power/sysfs.c:737 device_del+0x175/0xb90 drivers/base/core.c:2246 device_unregister+0x27/0xd0 drivers/base/core.c:2301 i2c_unregister_device drivers/i2c/i2c-core-base.c:814 [inline] __unregister_client drivers/i2c/i2c-core-base.c:1422 [inline] __unregister_client+0x7d/0x90 drivers/i2c/i2c-core-base.c:1418 device_for_each_child+0x100/0x170 drivers/base/core.c:2401 i2c_del_adapter drivers/i2c/i2c-core-base.c:1485 [inline] i2c_del_adapter+0x35b/0x640 drivers/i2c/i2c-core-base.c:1447 pvr2_i2c_core_done+0x6e/0xbb drivers/media/usb/pvrusb2/pvrusb2-i2c-core.c:662 pvr2_hdw_destroy+0x17e/0x380 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2669 pvr2_context_destroy+0x89/0x240 drivers/media/usb/pvrusb2/pvrusb2-context.c:79 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:146 [inline] pvr2_context_thread_func+0x65e/0x870 drivers/media/usb/pvrusb2/pvrusb2-context.c:167 kthread+0x313/0x420 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..