http://bugzilla.suse.com/show_bug.cgi?id=1159811 http://bugzilla.suse.com/show_bug.cgi?id=1159811#c2 --- Comment #2 from Roger Whittaker --- As I don't use the device often, I'm not exactly sure when (in terms of Tumbleweed versions) it stopped working, but it's not very long ago. I'll see if I can do a test with historical kernels. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.suse.com/show_bug.cgi?id=1159811 http://bugzilla.suse.com/show_bug.cgi?id=1159811#c4 --- Comment #4 from Roger Whittaker --- Update: a BIOS update had disabled xhci. But enabling it again did not change the situation on Tumbleweed: [ 121.443441] usb 1-1.4.3.3: new high-speed USB device number 12 using xhci_hcd [ 121.621025] usb 1-1.4.3.3: config 1 interface 2 altsetting 0 endpoint 0x82 has wMaxPacketSize 0, skipping [ 121.621474] usb 1-1.4.3.3: New USB device found, idVendor=1778, idProduct=0214, bcdDevice= 7.07 [ 121.621481] usb 1-1.4.3.3: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 121.621484] usb 1-1.4.3.3: Product: IPEVO Point 2 View [ 121.621487] usb 1-1.4.3.3: Manufacturer: IPEVO Inc. [ 121.624847] hid-generic 0003:1778:0214.0009: hiddev98,hidraw8: USB HID v1.10 Device [IPEVO Inc. IPEVO Point 2 View] on usb-0000:00:14.0-1.4.3.3/input0 [ 121.676837] videodev: Linux video capture interface: v2.00 [ 121.699501] uvcvideo: Found UVC 1.00 device IPEVO Point 2 View (1778:0214) [ 121.699558] uvcvideo: Failed to query (GET_INFO) UVC control 2 on unit 1: -32 (exp. 1). [ 121.699715] uvcvideo: Failed to query (GET_INFO) UVC control 9 on unit 1: -32 (exp. 1). [ 121.700234] uvcvideo: No streaming interface found for terminal 2. [ 121.700238] uvcvideo 1-1.4.3.3:1.1: Entity type for entity Extension 4 was not initialized! [ 121.700241] uvcvideo 1-1.4.3.3:1.1: Entity type for entity Processing 3 was not initialized! [ 121.700243] uvcvideo 1-1.4.3.3:1.1: Entity type for entity Camera 1 was not initialized! [ 121.700340] input: IPEVO Point 2 View: IPEVO Point as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1.4/1-1.4.3/1-1.4.3.3/1-1.4.3.3:1.1/input/input21 [ 121.700426] usbcore: registered new interface driver uvcvideo [ 121.700427] USB Video Class driver (1.1.1) No /dev/video0 created. 5.3.12-2-default on Tumbleweed 20191221 (x86_64). -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.suse.com/show_bug.cgi?id=1159811 http://bugzilla.suse.com/show_bug.cgi?id=1159811#c6 Frank Kruger changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |fkrueger@mailbox.org --- Comment #6 from Frank Kruger --- I can confirm your observation with TW20191227 and up-to-date kernel 5.4.6 from Kernel:stable repo. In fact, 'dmesg | grep uvc' gives: [ 410.922951] uvcvideo: Found UVC 1.00 device 1.3M WebCam (04f2:b1d8) [ 410.940082] uvcvideo 2-1.5:1.0: Entity type for entity Extension 4 was not initialized! [ 410.940088] uvcvideo 2-1.5:1.0: Entity type for entity Processing 3 was not initialized! [ 410.940091] uvcvideo 2-1.5:1.0: Entity type for entity Camera 1 was not initialized! [ 411.523692] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 3: -71 (exp. 2). [ 411.527901] uvcvideo: Failed to query (GET_DEF) UVC control 2 on unit 3: -71 (exp. 2). [ 411.532244] uvcvideo: Failed to query (GET_DEF) UVC control 3 on unit 3: -71 (exp. 2). [ 411.536482] uvcvideo: Failed to query (GET_DEF) UVC control 7 on unit 3: -71 (exp. 2). [ 411.540785] uvcvideo: Failed to query (GET_DEF) UVC control 6 on unit 3: -71 (exp. 2). -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.suse.com/show_bug.cgi?id=1159811 http://bugzilla.suse.com/show_bug.cgi?id=1159811#c8 --- Comment #8 from Frank Kruger --- (In reply to Frank Kruger from comment #7)

(In reply to Roger Whittaker from comment #5)

...

With 5.3.9-1-default the camera works.

On top of that, it works with 5.3.10-5.g8a126f1-default, while it does not with 5.4.6-1.ge5f8301-default and 5.5.rc3. Moreover, the error messages mentioned in comment #6 seem to be irrelevant (cc'ing Takashi Iwai).

That's really weird: After moving back from kernel 5.3.10-5-default to my original version 5.4.6-1 the webcam is still working. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.suse.com/show_bug.cgi?id=1159811 http://bugzilla.suse.com/show_bug.cgi?id=1159811#c9 --- Comment #9 from Takashi Iwai --- Care to report the issue to upstream? They should have a better suggestion how to debut the stuff. Thanks. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.suse.com/show_bug.cgi?id=1159811 http://bugzilla.suse.com/show_bug.cgi?id=1159811#c11 --- Comment #11 from Roger Whittaker --- Alan Stern then wrote: ------------------------------------- I see what's going on. The endpoint in question is isochronous, and the bAlternateSetting value is 0, which makes this the default altsetting for that interface. The USB spec says (at the end of section 5.6.3): All device default interface settings must not include any isochronous endpoints with non-zero data payload sizes (specified via wMaxPacketSize in the endpoint descriptor). Alternate interface settings may specify non-zero data payload sizes for isochronous endpoints. That explains why the maxpacket size is set to 0. So it looks like the endpoint-descriptor parsing code might want to make a special case to accept isochronous endpoints with maxpacket 0 if bAlternateSetting is 0. But whether we do this or not, I would expect the uvcvideo driver to look for isochronous endpoints in the alternate settings it will actually use, not in altsetting 0. Then the presence or absence of that endpoint descriptor would make no difference to uvcvideo. (Unless the UVC spec _requires_ these endpoint descriptors to be present. If it does then we should simply change the core parsing code and leave uvcvideo alone.) ------------------------------------- -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.suse.com/show_bug.cgi?id=1159811 http://bugzilla.suse.com/show_bug.cgi?id=1159811#c13 --- Comment #13 from Roger Whittaker --- I have tested and the camera works with this kernel from http://download.opensuse.org/repositories/home:/tiwai:/bsc1159811/standard/ $ uname -r 5.4.7-1.g43720a7-default dmesg lines on plugging the camera: [ 203.764259] usb 1-1.4.3.1: new high-speed USB device number 12 using xhci_hcd [ 203.914264] usb 1-1.4.3.1: New USB device found, idVendor=1778, idProduct=0214, bcdDevice= 7.07 [ 203.914271] usb 1-1.4.3.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 203.914275] usb 1-1.4.3.1: Product: IPEVO Point 2 View [ 203.914277] usb 1-1.4.3.1: Manufacturer: IPEVO Inc. [ 203.917425] hid-generic 0003:1778:0214.0009: hiddev98,hidraw8: USB HID v1.10 Device [IPEVO Inc. IPEVO Point 2 View] on usb-0000:00:14.0-1.4.3.1/input0 [ 203.966082] videodev: Linux video capture interface: v2.00 [ 203.988429] uvcvideo: Found UVC 1.00 device IPEVO Point 2 View (1778:0214) [ 203.988486] uvcvideo: Failed to query (GET_INFO) UVC control 2 on unit 1: -32 (exp. 1). [ 203.988614] uvcvideo: Failed to query (GET_INFO) UVC control 9 on unit 1: -32 (exp. 1). [ 203.989828] uvcvideo 1-1.4.3.1:1.1: Entity type for entity Extension 4 was not initialized! [ 203.989830] uvcvideo 1-1.4.3.1:1.1: Entity type for entity Processing 3 was not initialized! [ 203.989831] uvcvideo 1-1.4.3.1:1.1: Entity type for entity Camera 1 was not initialized! [ 203.989938] input: IPEVO Point 2 View: IPEVO Point as /devices/pci0000:00/0000:00:14.0/usb1/1-1/1-1.4/1-1.4.3/1-1.4.3.1/1-1.4.3.1:1.1/input/input21 [ 203.990032] usbcore: registered new interface driver uvcvideo [ 203.990033] USB Video Class driver (1.1.1) After plugging: $ ls -l /dev/video* crw-rw----+ 1 root video 81, 0 Jan 2 12:51 /dev/video0 crw-rw----+ 1 root video 81, 1 Jan 2 12:51 /dev/video1 And luvcview, cheese, etc work fine. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.suse.com/show_bug.cgi?id=1159811 http://bugzilla.suse.com/show_bug.cgi?id=1159811#c14 --- Comment #14 from Takashi Iwai --- I'm building a test kernel with Alan's fix patch in OBS home:tiwai:bsc1159811-fix2 repo. Please give it a try later and report back on the mail thread. Thanks. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.suse.com/show_bug.cgi?id=1159811 http://bugzilla.suse.com/show_bug.cgi?id=1159811#c16 Takashi Iwai changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #16 from Takashi Iwai --- The fix patch is pushed to both stable and SLE15-SP2 branches now. -- You are receiving this mail because: You are on the CC list for the bug.