Estas tarjetas funcionaban en un servidor 16.04, pero ese servidor falló, así que construí una nueva caja con 20.04 y, cuando instalo las tarjetas, no funcionan.
Estaba intentando ver la cámara con Zoneminder pero no tuve suerte. Para solucionar el problema, eliminé el monitor en Zoneminder (para asegurarme de que el dispositivo no se esté utilizando), descargué v4l-utils*, compilé v4l2grab y cuando lo ejecuté, los archivos guardados no contienen imágenes.
* Cloné el repositorio v4l-utils, cd a v4l-utils, revisé v4l-utils-1.18.0 (la versión que usa 20.04LTS), ejecuté make (sin errores), cd para contribuir/probar y ejecuté . /v4l2grab sin argumentos.
Aquí está el resultado de dmesg del momento en que intenté ejecutar v4l2grab por primera vez desde que se inició el sistema (hay más en dmesg entre el momento del inicio y aquí, pero no puedo publicarlo ahora.
[17648.566238] ------------[ cut here ]------------
[17648.566254] WARNING: CPU: 1 PID: 2760 at drivers/media/v4l2-core/v4l2-ioctl.c:1069 v4l_querycap+0x8f/0xa0 [videodev]
[17648.566255] Modules linked in: ip6table_filter ip6_tables xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter bpfilter bttv coretemp tea575x tveeprom kvm_intel videobuf_dma_sg videobuf_core kvm rc_core videodev mc input_leds wmi_bmof mei_me mei mac_hid sch_fq_codel dm_multipath msr scsi_dh_rdac scsi_dh_emc scsi_dh_alua ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic i915 gpio_ich i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops usbhid lpc_ich drm e1000e pata_acpi hid ahci i2c_i801 libahci wmi video floppy
[17648.566284] CPU: 1 PID: 2760 Comm: v4l2grab Tainted: G W 5.4.0-84-generic #94-Ubuntu
[17648.566285] Hardware name: LENOVO 7373RK3/LENOVO, BIOS 5CKT51AUS 07/23/2009
[17648.566290] RIP: 0010:v4l_querycap+0x8f/0xa0 [videodev]
[17648.566292] Code: 00 00 80 48 b9 00 00 20 00 00 00 20 00 48 0b 4b 54 21 d6 39 f2 75 13 48 89 4b 54 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b eb d0 <0f> 0b 48 89 4b 54 5b 41 5c 41 5d 41 5e 41 5f 5d c3 66 66 66 66 90
[17648.566293] RSP: 0018:ffff99b50080fc68 EFLAGS: 00010206
[17648.566294] RAX: 0000000000000000 RBX: ffff99b50080fd88 RCX: 0521000585200015
[17648.566295] RDX: 0000000085010005 RSI: 0000000085000005 RDI: ffff99b50080fdc8
[17648.566296] RBP: ffff99b50080fc90 R08: 0000000000000000 R09: 000000000000000c
[17648.566297] R10: ffff99b50080fdd8 R11: ffff99b60080fdbb R12: ffff8a8349910870
[17648.566298] R13: ffff8a834a525800 R14: ffff8a8349943800 R15: ffffffffc099a6c0
[17648.566299] FS: 00007ff4345cbb80(0000) GS:ffff8a838a300000(0000) knlGS:0000000000000000
[17648.566300] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[17648.566301] CR2: 00007ff434a5bfe0 CR3: 00000000cb400000 CR4: 00000000000406e0
[17648.566302] Call Trace:
[17648.566310] __video_do_ioctl+0x1a7/0x410 [videodev]
[17648.566313] ? list_lru_add+0x6c/0x1c0
[17648.566319] ? v4l_s_fmt+0x670/0x670 [videodev]
[17648.566324] video_usercopy+0x300/0x700 [videodev]
[17648.566327] ? path_openat+0x140/0x290
[17648.566333] video_ioctl2+0x15/0x20 [videodev]
[17648.566337] v4l2_ioctl+0x4c/0x60 [videodev]
[17648.566339] do_vfs_ioctl+0x407/0x670
[17648.566341] ksys_ioctl+0x67/0x90
[17648.566343] __x64_sys_ioctl+0x1a/0x20
[17648.566345] do_syscall_64+0x57/0x190
[17648.566348] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[17648.566349] RIP: 0033:0x7ff43494a89d
[17648.566351] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c3 f5 0c 00 f7 d8 64 89 01 48
[17648.566352] RSP: 002b:00007ffeccf5f268 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
[17648.566353] RAX: ffffffffffffffda RBX: 0000000000000280 RCX: 00007ff43494a89d
[17648.566354] RDX: 00007ffeccf5f2c0 RSI: 0000000080685600 RDI: 0000000000000003
[17648.566355] RBP: 00007ffeccf5f400 R08: 00007ffeccf5ec70 R09: 00007ffeccf5f330
[17648.566356] R10: 000000000000000a R11: 0000000000000202 R12: 0000000000000003
[17648.566357] R13: 00007ffeccf5f330 R14: 0000000000000000 R15: 0000000000000000
[17648.566358] ---[ end trace f7f2411a3d979c0f ]---
[17648.566422] ------------[ cut here ]------------
[17648.566428] WARNING: CPU: 1 PID: 2760 at drivers/media/v4l2-core/v4l2-ioctl.c:1069 v4l_querycap+0x8f/0xa0 [videodev]
[17648.566429] Modules linked in: ip6table_filter ip6_tables xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter bpfilter bttv coretemp tea575x tveeprom kvm_intel videobuf_dma_sg videobuf_core kvm rc_core videodev mc input_leds wmi_bmof mei_me mei mac_hid sch_fq_codel dm_multipath msr scsi_dh_rdac scsi_dh_emc scsi_dh_alua ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear hid_generic i915 gpio_ich i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops usbhid lpc_ich drm e1000e pata_acpi hid ahci i2c_i801 libahci wmi video floppy
[17648.566450] CPU: 1 PID: 2760 Comm: v4l2grab Tainted: G W 5.4.0-84-generic #94-Ubuntu
[17648.566450] Hardware name: LENOVO 7373RK3/LENOVO, BIOS 5CKT51AUS 07/23/2009
[17648.566456] RIP: 0010:v4l_querycap+0x8f/0xa0 [videodev]
[17648.566457] Code: 00 00 80 48 b9 00 00 20 00 00 00 20 00 48 0b 4b 54 21 d6 39 f2 75 13 48 89 4b 54 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b eb d0 <0f> 0b 48 89 4b 54 5b 41 5c 41 5d 41 5e 41 5f 5d c3 66 66 66 66 90
[17648.566458] RSP: 0018:ffff99b50080fc68 EFLAGS: 00010206
[17648.566459] RAX: 0000000000000000 RBX: ffff99b50080fd88 RCX: 0521000585200015
[17648.566460] RDX: 0000000085010005 RSI: 0000000085000005 RDI: ffff99b50080fdc8
[17648.566461] RBP: ffff99b50080fc90 R08: 0000000000000000 R09: 000000000000000c
[17648.566462] R10: ffff99b50080fdd8 R11: ffff99b60080fdbb R12: ffff8a8349910870
[17648.566463] R13: ffff8a834a525800 R14: ffff8a8349943800 R15: ffffffffc099a6c0
[17648.566464] FS: 00007ff4345cbb80(0000) GS:ffff8a838a300000(0000) knlGS:0000000000000000
[17648.566465] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[17648.566466] CR2: 00007ff4347ca294 CR3: 00000000cb400000 CR4: 00000000000406e0
[17648.566467] Call Trace:
[17648.566472] __video_do_ioctl+0x1a7/0x410 [videodev]
[17648.566474] ? alloc_set_pte+0x118/0x610
[17648.566477] ? filemap_map_pages+0x24c/0x380
[17648.566482] ? v4l_s_fmt+0x670/0x670 [videodev]
[17648.566487] video_usercopy+0x300/0x700 [videodev]
[17648.566493] video_ioctl2+0x15/0x20 [videodev]
[17648.566498] v4l2_ioctl+0x4c/0x60 [videodev]
[17648.566499] do_vfs_ioctl+0x407/0x670
[17648.566502] ? do_user_addr_fault+0x216/0x450
[17648.566503] ksys_ioctl+0x67/0x90
[17648.566505] __x64_sys_ioctl+0x1a/0x20
[17648.566507] do_syscall_64+0x57/0x190
[17648.566508] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[17648.566509] RIP: 0033:0x7ff43494a89d
[17648.566510] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d c3 f5 0c 00 f7 d8 64 89 01 48
[17648.566511] RSP: 002b:00007ffeccf5f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[17648.566513] RAX: ffffffffffffffda RBX: 00007ff4347ca280 RCX: 00007ff43494a89d
[17648.566514] RDX: 00007ffeccf5f1d0 RSI: 0000000080685600 RDI: 0000000000000003
[17648.566514] RBP: 00007ffeccf5f1a0 R08: 00007ffeccf5f330 R09: 00007ffeccf5f330
[17648.566515] R10: 00007ffeccf5f330 R11: 0000000000000246 R12: 0000000000000011
[17648.566516] R13: 0000000000000000 R14: 00007ffeccf5f1d0 R15: 000056550a31a5d0
[17648.566518] ---[ end trace f7f2411a3d979c10 ]---
Parece que algo en el controlador v4l está fallando, pero no tengo los conocimientos suficientes para solucionar el problema por mi cuenta.
Por favor, avíseme si debo publicar más información como
- más de dmesg
- modinfo bttv
- systool -vm bttv
- información v4l lspci
- scanpci.gatos
o cualquier otra cosa. Estaré atento a esta pregunta por un tiempo.
Respuesta1
Reinstalé todo en una caja nueva y ahora las tarjetas están funcionando. Imagínate.