Re: Kernel error "Unknown pixelformat 0x00000000" occurs when I start capture video

[Laurent Pinchart <laurent.pinchart@ideasonboard.com>]

Hello,

On Tuesday, 8 January 2019 16:45:37 EET Mauro Carvalho Chehab wrote:
> Em Sun, 6 Jan 2019 01:05:16 +0500 Mikhail Gavrilov escreveu:
> > Hi folks!
> > Every time when I start capture video from external capture card
> > Avermedia Live Gamer ULTRA GC553
> > (https://www.avermedia.com/gaming/product/game_capture/live_gamer_ultra_gc
> > 553)
> 
> What's the driver used by this device?
> 
> A quick browsing at the Avermedia page you pointed, it indicates that this
> should be using the UVC driver:
> 
> 	"The LGU takes full advantage of UVC technology, which
> 	 basically standardizes video drivers across Windows and Mac.
> 	 In other words, all you need to do is plug your LGU to
> 	 your PC or Mac and it’s ready to record and stream."
> 
> So, I *suspect* that it uses the uvcvideo driver, but better to
> double check.

Given the full kernel log part of the original message,

[    5.184850] uvcvideo: Unknown video format 
30313050-0000-0010-8000-00aa00389b71
[    5.184882] uvcvideo: Found UVC 1.00 device Live Gamer Ultra-Video (07ca:
0553)
[    5.201323] uvcvideo 4-3:1.0: Entity type for entity Extension 3 was not 
initialized!
[    5.201348] uvcvideo 4-3:1.0: Entity type for entity Processing 2 was not 
initialized!
[    5.201367] uvcvideo 4-3:1.0: Entity type for entity Camera 1 was not 
initialized!
[    5.201505] input: Live Gamer Ultra-Video: Live Ga as /devices/
pci0000:00/0000:00:07.1/0000:0c:00.3/usb4/4-3/4-3:1.0/input/input16
[    5.201646] usbcore: registered new interface driver uvcvideo
[    5.203637] USB Video Class driver (1.1.1)

This is a UVC device.

> > I got kernel error "Unknown pixelformat 0x00000000".
> > It look like false positive because I am able record video with OBS in
> > 4K resolution from another Linux machine or PS 4 Pro  if I select
> > video format "Planar YVU 4:2:0" or "YU12 (Emulated)"
> > But very unpleasant to see this error in kernel log.
> > 
> > $ uname -r
> > 4.20.0-1.fc30.x86_64
> > 
> > $ lsusb
> > Bus 004 Device 007: ID 07ca:0553 AVerMedia Technologies, Inc.

Mikhail, could you please post the output of

lsusb -v -d 07ca:0553

if possible running as root ?

> > [   75.985776] ------------[ cut here ]------------
> > [   75.985780] Unknown pixelformat 0x00000000
> > [   75.985813] WARNING: CPU: 12 PID: 3175 at
> > drivers/media/v4l2-core/v4l2-ioctl.c:1342 v4l_enum_fmt+0xfc0/0x1380
> > [videodev]
> > [   75.985814] Modules linked in: nls_utf8 isofs fuse rfcomm
> > xt_CHECKSUM ipt_MASQUERADE tun bridge stp llc devlink
> > nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter
> > ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ip6table_nat
> > nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat
> > nf_nat_ipv4 nf_nat iptable_mangle iptable_raw iptable_security
> > nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nfnetlink
> > ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep sunrpc
> > xfs vfat fat libcrc32c edac_mce_amd arc4 kvm_amd kvm r8822be(C)
> > snd_hda_codec_realtek snd_hda_codec_generic irqbypass
> > snd_hda_codec_hdmi snd_hda_intel snd_hda_codec mac80211 snd_usb_audio
> > crct10dif_pclmul snd_hda_core snd_usbmidi_lib crc32_pclmul snd_hwdep
> > snd_rawmidi snd_seq snd_seq_device uvcvideo snd_pcm
> > ghash_clmulni_intel btusb videobuf2_vmalloc videobuf2_memops btrtl
> > videobuf2_v4l2 btbcm eeepc_wmi videobuf2_common btintel asus_wmi
> > sparse_keymap bluetooth video videodev wmi_bmof joydev
> > [   75.985838]  snd_timer cfg80211 media k10temp snd sp5100_tco
> > i2c_piix4 soundcore ecdh_generic ccp rfkill pcc_cpufreq gpio_amdpt
> > gpio_generic acpi_cpufreq binfmt_misc uas usb_storage hid_sony
> > ff_memless amdgpu hid_logitech_hidpp chash amd_iommu_v2 gpu_sched
> > drm_kms_helper ttm drm igb crc32c_intel hid_logitech_dj dca nvme
> > i2c_algo_bit nvme_core wmi pinctrl_amd
> > [   75.985854] CPU: 12 PID: 3175 Comm: obs Tainted: G         C
> > 4.20.0-1.fc30.x86_64 #1
> > [   75.985856] Hardware name: System manufacturer System Product
> > Name/ROG STRIX X470-I GAMING, BIOS 1103 11/16/2018
> > [   75.985862] RIP: 0010:v4l_enum_fmt+0xfc0/0x1380 [videodev]
> > [   75.985863] Code: c6 4b 79 b5 c0 e9 55 f1 ff ff 48 c7 c6 09 7c b5
> > c0 3d 56 50 38 30 0f 84 43 f1 ff ff 89 c6 48 c7 c7 1c 7d b5 c0 e8 3a
> > 3b 57 f9 <0f> 0b 41 80 7c 24 0c 00 0f 85 45 f1 ff ff 41 8b 44 24 2c 49
> > 8d 7c
> > [   75.985865] RSP: 0018:ffffa52889277cb8 EFLAGS: 00010286
> > [   75.985867] RAX: 0000000000000000 RBX: 0000000000000001 RCX:
> > 0000000000000006 [   75.985868] RDX: 0000000000000007 RSI:
> > 0000000000000086 RDI: ffff964cbeb168c0 [   75.985869] RBP:
> > 0000000000000000 R08: 0000000000000005 R09: 0000000000000007 [  
> > 75.985870] R10: 0000000000000000 R11: ffffffffbb99e22d R12:
> > ffffa52889277dc0 [   75.985872] R13: ffffffffc05079e0 R14:
> > ffff964c8a790600 R15: ffffffffffffffed [   75.985873] FS: 
> > 00007f0c1eab1f00(0000) GS:ffff964cbeb00000(0000) knlGS:0000000000000000
> > [   75.985875] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > [   75.985876] CR2: 00007f0c08197294 CR3: 000000078795e000 CR4:
> > 00000000003406e0 [   75.985877] Call Trace:
> > [   75.985885]  __video_do_ioctl+0x174/0x3b0 [videodev]
> > [   75.985889]  ? page_add_file_rmap+0xa0/0x2d0
> > [   75.985892]  ? alloc_set_pte+0x293/0x660
> > [   75.985897]  video_usercopy+0x253/0x5a0 [videodev]
> > [   75.985903]  ? copy_overflow+0x20/0x20 [videodev]
> > [   75.985906]  ? selinux_file_ioctl+0x161/0x200
> > [   75.985911]  v4l2_ioctl+0x45/0x50 [videodev]
> > [   75.985914]  do_vfs_ioctl+0xa4/0x630
> > [   75.985916]  ksys_ioctl+0x60/0x90
> > [   75.985918]  __x64_sys_ioctl+0x16/0x20
> > [   75.985921]  do_syscall_64+0x5b/0x160
> > [   75.985924]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
> > [   75.985926] RIP: 0033:0x7f0c2454014d
> > [   75.985928] 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 0b 5d 0c 00 f7 d8 64 89
> > 01 48
> > [   75.985929] RSP: 002b:00007ffe01cdc5f8 EFLAGS: 00000246 ORIG_RAX:
> > 0000000000000010
> > [   75.985931] RAX: ffffffffffffffda RBX: 00007f0c08197280 RCX:
> > 00007f0c2454014d [   75.985932] RDX: 00007ffe01cdc660 RSI:
> > 00000000c0405602 RDI: 0000000000000027 [   75.985933] RBP:
> > 0000000000000004 R08: 0000000000000000 R09: 0000000000000000 [  
> > 75.985934] R10: 0000000000000000 R11: 0000000000000246 R12:
> > 0000000000000007 [   75.985935] R13: 0000000000000001 R14:
> > 00007ffe01cdc630 R15: 000055a982fdf6e0 [   75.985937] ---[ end trace
> > 26d01f03c564a254 ]---
> > 
> > 
> > Is it possible to fix this error?
> 
> I suspect that the UVC descriptors are pointing to another format that
> the driver currently doesn't recognize, but I would be expecting to see
> some message with:
> 
> 	Unknown video format xxxxxxx
> 
> printed as well, if this is, indeed, using the uvcdriver.

-- 
Regards,

Laurent Pinchart