pvrusb2: Invalid write control endpoint 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 2 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: 108 at fs/sysfs/group.c:254 sysfs_remove_group fs/sysfs/group.c:254 [inline] WARNING: CPU: 0 PID: 108 at fs/sysfs/group.c:254 sysfs_remove_group+0x155/0x1b0 fs/sysfs/group.c:245 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 108 Comm: pvrusb2-context Not tainted 5.2.0-rc5+ #11 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+0xca/0x13e lib/dump_stack.c:113 panic+0x292/0x6c9 kernel/panic.c:219 __warn.cold+0x20/0x4b kernel/panic.c:576 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+0x12b/0x1e0 arch/x86/kernel/traps.c:272 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:986 RIP: 0010:sysfs_remove_group fs/sysfs/group.c:254 [inline] RIP: 0010:sysfs_remove_group+0x155/0x1b0 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 60 4a d0 85 e8 a6 1f 8c ff <0f> 0b eb 95 e8 82 48 dc ff e9 d2 fe ff ff 48 89 df e8 75 48 dc ff RSP: 0018:ffff8881d43d7b68 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffffff85f240c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8127ec0d RDI: ffffed103a87af5f RBP: 0000000000000000 R08: ffff8881d43c8000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881d0875da0 R13: ffffffff85f24660 R14: 1ffff1103a87af98 R15: ffff8881d0875de8 dpm_sysfs_remove+0x97/0xb0 drivers/base/power/sysfs.c:735 device_del+0x172/0xb80 drivers/base/core.c:2251 device_unregister+0x11/0x30 drivers/base/core.c:2306 i2c_unregister_device+0x13f/0x180 drivers/i2c/i2c-core-base.c:844 __unregister_client drivers/i2c/i2c-core-base.c:1510 [inline] __unregister_client+0x78/0x90 drivers/i2c/i2c-core-base.c:1506 device_for_each_child+0xf9/0x170 drivers/base/core.c:2406 i2c_del_adapter drivers/i2c/i2c-core-base.c:1573 [inline] i2c_del_adapter+0x2b2/0x550 drivers/i2c/i2c-core-base.c:1535 pvr2_i2c_core_done+0x69/0xb6 drivers/media/usb/pvrusb2/pvrusb2-i2c-core.c:662 pvr2_hdw_destroy+0x179/0x370 drivers/media/usb/pvrusb2/pvrusb2-hdw.c:2670 pvr2_context_destroy+0x84/0x230 drivers/media/usb/pvrusb2/pvrusb2-context.c:79 pvr2_context_check drivers/media/usb/pvrusb2/pvrusb2-context.c:146 [inline] pvr2_context_thread_func+0x657/0x860 drivers/media/usb/pvrusb2/pvrusb2-context.c:167 kthread+0x30b/0x410 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Kernel Offset: disabled Rebooting in 86400 seconds..