On 05/27/14 19:55, Richie Gress wrote:
>
>
>> Date: Tue, 27 May 2014 09:03:33 +0200
>> From: hverk...@xs4all.nl
>> To: searchfgold67...@live.com; linux-usb@vger.kernel.org;
>> linux-me...@vger.kernel.org
>> Subject: Re: 1d6b:0001 [MSI A55M-P33] No webcam functionality with Zoran
>> Microelectronics, Ltd Digital Camera EX-20 DSC
>>
>> On 05/27/2014 03:34 AM, Richie wrote:
>>> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1322380
>>>
>>> [1.] One line summary of the problem:
>>>
>>> 1d6b:0001 [MSI A55M-P33] No webcam functionality with Zoran
>>> Microelectronics,
>>> Ltd Digital Camera EX-20 DSC
>>>
>>> [2.] Full description of the problem/report:
>>>
>>> No software recognizes the webcam and this is not a regression. dmesg
>>> reports
>>> the following additional output after plugging the camera. You can see
>>> where I
>>> change the camera to "PC Mode" (in order to use the webcam, users must do
>>> this
>>> from the camera) at [ 691.147589]. The device is turned off at [
>>> 1094.746444]:
>>>
>>> [ 688.796908] usb 4-2: new full-speed USB device number 2 using ohci-pci
>>> [ 688.965802] usb 4-2: New USB device found, idVendor=0595, idProduct=2002
>>> [ 688.965807] usb 4-2: New USB device strings: Mfr=4, Product=5,
>>> SerialNumber=6
>>> [ 688.965809] usb 4-2: Product: COACH DSC
>>> [ 688.965811] usb 4-2: Manufacturer: ZORAN
>>> [ 688.965813] usb 4-2: SerialNumber: ZORAN01234567
>>> [ 689.012630] usb-storage 4-2:1.0: USB Mass Storage device detected
>>> [ 689.021168] scsi6 : usb-storage 4-2:1.0
>>> [ 689.021266] usbcore: registered new interface driver usb-storage
>>> [ 690.030971] scsi 6:0:0:0: Direct-Access ZORAN COACH6 (I62) 1.10 PQ: 0
>>> ANSI:
>>> 0 CCS
>>> [ 690.036147] sd 6:0:0:0: Attached scsi generic sg3 type 0
>>> [ 690.044964] sd 6:0:0:0: [sdc] 3962629 512-byte logical blocks: (2.02
>>> GB/1.88
>>> GiB)
>>> [ 690.054977] sd 6:0:0:0: [sdc] Write Protect is off
>>> [ 690.054984] sd 6:0:0:0: [sdc] Mode Sense: 00 06 00 00
>>> [ 690.064965] sd 6:0:0:0: [sdc] No Caching mode page found
>>> [ 690.064971] sd 6:0:0:0: [sdc] Assuming drive cache: write through
>>> [ 690.108960] sd 6:0:0:0: [sdc] No Caching mode page found
>>> [ 690.108966] sd 6:0:0:0: [sdc] Assuming drive cache: write through
>>> [ 690.156970] sdc:
>>> [ 690.210974] sd 6:0:0:0: [sdc] No Caching mode page found
>>> [ 690.210980] sd 6:0:0:0: [sdc] Assuming drive cache: write through
>>> [ 690.210985] sd 6:0:0:0: [sdc] Attached SCSI removable disk
>>> [ 691.147589] usb 4-2: USB disconnect, device number 2
>>> [ 691.793364] usb 4-2: new full-speed USB device number 3 using ohci-pci
>>> [ 691.962202] usb 4-2: New USB device found, idVendor=0595, idProduct=4343
>>> [ 691.962207] usb 4-2: New USB device strings: Mfr=7, Product=8,
>>> SerialNumber=9
>>> [ 691.962209] usb 4-2: Product: COACH DSC
>>> [ 691.962211] usb 4-2: Manufacturer: ZORAN
>>> [ 691.962213] usb 4-2: SerialNumber: ZORAN00000001
>>> [ 691.964262] usb-storage 4-2:1.0: USB Mass Storage device detected
>>> [ 691.965410] usb-storage: probe of 4-2:1.0 failed with error -5
>>> [ 692.053929] Linux video capture interface: v2.00
>>> [ 692.091447] zr364xx 4-2:1.0: Zoran 364xx compatible webcam plugged
>>> [ 692.091453] zr364xx 4-2:1.0: model 0595:4343 detected
>>> [ 692.091461] usb 4-2: 320x240 mode selected
>>> [ 692.094356] usb 4-2: Zoran 364xx controlling device video0
>>
>> Clearly the webcam is recognized and a /dev/video0 node is created.
>> Please check that /dev/video0 exists. Try e.g. v4l2-ctl -D -d /dev/video0,
>> it should list it as using the zr364xx driver.
>>
>> So what exactly doesn't work?
>>
>> Regards,
>>
>> Hans
>>
>>> [ 692.094672] usbcore: registered new interface driver zr364xx
>>> [ 1094.746444] hub 4-0:1.0: port 2 disabled by hub (EMI?), re-enabling...
>>> [ 1094.746451] usb 4-2: USB disconnect, device number 3
>>> [ 1094.747395] zr364xx 4-2:1.0: Zoran 364xx webcam unplugged
>>
>
> Yes, it does seem to be using the zr364xx driver:
>
> $ v4l2-ctl -D -d /dev/video0
> Driver Info (not using libv4l2):
> Driver name : Zoran 364xx
> Card type : COACH DSC
> Bus info : 4-1
> Driver version: 3.15.0
> Capabilities : 0x85000001
> Video Capture
> Read/Write
> Streaming
> Device Capabilities
> Device Caps : 0x05000001
> Video Capture
> Read/Write
> Streaming
>
> The exact problem is that while the camera is recognized as a camera by
> software like Skype, Kamoso, and Cheese, there is no picture, just black. A
> "320x240 mode" was mentioned... perhaps that resolution is just too small to
> use by the software?
Try using qv4l2. If that doesn't work, then it is likely to be a driver issue.
I have one zr364xx based camera and I can try it tomorrow or during the weekend.
It used to work, but it's been a long time since I tried it. On the other hand,
nobody did any work on that driver for a long time.
Regards,
Hans
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