Public bug reported:
My WinTV card does not wake up after leaving the sleep mode. To fix this
I used to send a usbreset xxxx:xxxx (in a systemd.service))
This worked fine until recently. I suspect one of the recent updates to
cause the issue.
As a consequence the PC does not enter the sleep mode again and also
does not switch off either.
Please find below the result of some reporting I created with
uname -a
lsusb -d 2040:0265
sudo journalctl -k -b | grep -A40 -B10 'em28xx_usb_disconnect'
Linux Samsungs-550P5C-550P7C 7.0.0-42-generic #42-Ubuntu SMP PREEMPT_DYNAMIC
Thu Oct 15 08:06:44 UTC 2026 x86_64 GNU/Linux
Bus 003 Device 003: ID 2040:0265 Hauppauge WinTV-dualHD DVB
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RAX: 0000000000000000 RBX:
ffff8e6a8a75c000 RCX: 0000000000000000
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RDX: 0000000000000000 RSI:
0000000000000000 RDI: ffff8e6a8a75c1e8
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RBP: ffffd21460037c00 R08:
0000000000000000 R09: 0000000000000000
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: R10: 0000000000000000 R11:
0000000000000000 R12: ffff8e6a8f056000
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: R13: 0000000000000000 R14:
ffffffffc164f050 R15: ffff8e6a80f3b850
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: FS: 00007af35552f740(0000)
GS:ffff8e6bf0679000(0000) knlGS:0000000000000000
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: CR2: 0000000000000000 CR3:
000000018197a005 CR4: 00000000001726f0
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: Call Trace:
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: <TASK>
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel:
em28xx_usb_disconnect.cold+0x87/0xed [em28xx]
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: usb_unbind_interface+0x9b/0x2c0
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: device_remove+0x68/0x80
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel:
device_release_driver_internal+0x1fb/0x260
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: device_release_driver+0x12/0x20
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: usb_forced_unbind_intf+0x96/0xe0
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: ?
usb_autoresume_device+0x1e/0x70
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: usb_reset_device+0xf4/0x300
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: usbdev_do_ioctl+0x11f9/0x1520
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: ? do_sys_openat2+0x99/0xe0
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: ? __x64_sys_openat+0x5f/0xa0
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: usbdev_ioctl+0xe/0x20
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: __x64_sys_ioctl+0xa3/0x100
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: x64_sys_call+0x103b/0x2390
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: do_syscall_64+0x105/0x580
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: ?
arch_exit_to_user_mode_prepare.isra.0+0xd/0x100
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: ? irqentry_exit+0x97/0x6f0
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: ? exc_page_fault+0x94/0x1e0
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel:
entry_SYSCALL_64_after_hwframe+0x76/0x7e
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RIP: 0033:0x7af355332a7d
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: Code: 04 25 28 00 00 00 48 89 45
c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0
b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28
00 00 00
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RSP: 002b:00007ffd8dd44020
EFLAGS: 00000246 ORIG_RAX: 0000000000000010
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RAX: ffffffffffffffda RBX:
0000000000000003 RCX: 00007af355332a7d
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RDX: 0000000000000000 RSI:
0000000000005514 RDI: 0000000000000003
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RBP: 00007ffd8dd44070 R08:
0000000000000000 R09: 0000000000000000
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: R10: 0000000000000000 R11:
0000000000000246 R12: 0000569ffbe0a010
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: R13: 0000000000000002 R14:
00007af355595000 R15: 0000569fdf91dd18
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: </TASK>
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: Modules linked in: rfcomm
snd_seq_dummy snd_hrtimer cmac algif_hash algif_skcipher af_alg bnep qrtr
rc_hauppauge em28xx_rc si2157 si2168 em28xx_dvb dvb_core binfmt_misc
nls_iso8859_1 snd_hda_codec_intelhdmi snd_hda_codec_alc269
snd_hda_codec_realtek_lib snd_hda_scodec_component snd_hda_codec_generic
intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp
at24 kvm_intel ath3k kvm btusb uvcvideo videobuf2_vmalloc ath9k irqbypass uvc
btmtk videobuf2_memops em28xx btrtl videobuf2_v4l2 ath9k_common
videobuf2_common ghash_clmulni_intel tveeprom btbcm btintel aesni_intel
ath9k_hw i2c_i801 videodev ath rapl i2c_smbus intel_cstate snd_hda_codec_nvhdmi
mei_pxp mei_hdcp bluetooth mc i2c_mux snd_hda_codec_hdmi nouveau mac80211 i915
snd_seq_midi gpu_sched snd_hda_intel snd_seq_midi_event snd_hda_codec drm_gpuvm
lpc_ich mxm_wmi cfg80211 drm_ttm_helper snd_rawmidi drm_buddy snd_hda_core
snd_intel_dspcfg ttm snd_intel_sdw_acpi drm_exec snd_hwdep libarc4
drm_display_helper snd_pcm snd_seq
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: snd_seq_device cec mei_me
snd_timer rc_core mei i2c_algo_bit snd soundcore input_leds joydev mac_hid
sch_fq_codel lp ppdev parport msr efi_pstore dmi_sysfs autofs4
hid_logitech_hidpp r8169 psmouse realtek serio_raw phylink video ahci libahci
wmi hid_logitech_dj hid_generic usbhid hid
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: CR2: 0000000000000000
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: ---[ end trace 0000000000000000
]---
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: pstore: backend (efi_pstore)
writing error (-12)
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RIP:
0010:em28xx_close_extension+0x80/0x130 [em28xx]
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: Code: 81 fb 80 e4 64 c1 75 cd 49
8b 9c 24 a0 17 00 00 48 85 db 74 4b 48 8b 83 f0 01 00 00 48 8b 93 e8 01 00 00
48 8d bb e8 01 00 00 <48> 3b 38 0f 85 21 2e 00 00 48 3b 7a 08 0f 85 17 2e 00 00
48 89 42
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RSP: 0018:ffffd21460037bf0
EFLAGS: 00010286
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RAX: 0000000000000000 RBX:
ffff8e6a8a75c000 RCX: 0000000000000000
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RDX: 0000000000000000 RSI:
0000000000000000 RDI: ffff8e6a8a75c1e8
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: RBP: ffffd21460037c00 R08:
0000000000000000 R09: 0000000000000000
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: R10: 0000000000000000 R11:
0000000000000000 R12: ffff8e6a8f056000
Nov 01 17:13:06 Samsungs-550P5C-550P7C kernel: R13: 0000000000000000 R14:
ffffffffc164f050 R15: ffff8e6a80f3b850
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: linux-image-7.0.0-42-generic 7.0.0-42.42
ProcVersionSignature: Ubuntu 7.0.0-42.42-generic 7.0.14
Uname: Linux 7.0.0-42-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: michael 3280 F.... wireplumber
/dev/snd/controlC0: michael 3280 F.... wireplumber
/dev/snd/seq: michael 3269 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Nov 2 12:00:53 2026
InstallationDate: Installed on 2025-11-29 (338 days ago)
InstallationMedia: Ubuntu 24.04.2 LTS "Noble Numbat" - Release amd64 (20250215)
IwDevWlp2s0Link: Not connected.
MachineType: SAMSUNG ELECTRONICS CO., LTD. 550P5C/550P7C
ProcEnviron:
LANG=de_DE.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB:
0 i915drmfb
1 nouveaudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-7.0.0-42-generic
root=UUID=49a430be-c00b-4478-b452-f31bd29196de ro quiet splash
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
SourcePackage: linux
UpgradeStatus: Upgraded to resolute on 2026-10-01 (32 days ago)
dmi.bios.date: 09/17/2013
dmi.bios.release: 4.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P05ABI.016.130917.dg
dmi.board.asset.tag: No Asset Tag
dmi.board.name: NP550P7C-T0BDE
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: SEC_SW_REVISION_1234567890ABCD
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrP05ABI.016.130917.dg:bd09/17/2013:br4.6:svnSAMSUNGELECTRONICSCO.,LTD.:pn550P5C/550P7C:pvrP05ABI:rvnSAMSUNGELECTRONICSCO.,LTD.:rnNP550P7C-T0BDE:rvrSEC_SW_REVISION_1234567890ABCD:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:skuSAMSUNGSENSSeries:pfaSAMSUNGSENS:
dmi.product.family: SAMSUNG SENS
dmi.product.name: 550P5C/550P7C
dmi.product.sku: SAMSUNG SENS Series
dmi.product.version: P05ABI
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
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https://bugs.launchpad.net/bugs/2172747
Title:
Kernel oops in em28xx_usb_disconnect when resetting Hauppauge WinTV-
dualHD
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