Ubuntu
linux-source-2.6.20 package

DVB-T drivers and Webcam drivers incompatible

Bug #112698 reported by Carlos Blanquer Bogacz
2
Affects Status Importance Assigned to Milestone
linux-source-2.6.20 (Ubuntu)
Fix Released
Undecided
Brian Murray

Bug Description

Binary package hint: linux-source-2.6.20

DEVICES====================================================
Webcam: Logitech Quickcam
DVB-T PCI card: Hauppauge HVR-1300

PROBLEM SUMMARY===========================================
Both devices cannot be both enabled on 7.04
PROBLEM DESCRIPTION========================================
1. at 7.04 install the webcam is automatically recogniseed and works, so does the TV card but the DVB-T module is not loaded
2. compile and load DVB-T module, results into DVB-T functionality active (Kaffeine) but both /dev/video0 and /dev/video1 are linked to the TV card. Also /dev/dvb/adapter0 is created. However the webcam disappears and instead analog circuits of the TV card are selected/selectable (ekiga).
3. compile and load webcam driver gspcav (version 20070426 and later retried with version 20070110) produces an error at compilation and thus cannot load. No webcam enabled. (I would have expected a new /dev/video2 or even any of the former to be replaced by the webcam).

DATA=======================================================
lspci (TV card)
03:0c.0 Multimedia video controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder (rev 05)
03:0c.1 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder [Audio Port] (rev 05)
03:0c.2 Multimedia controller: Conexant CX23880/1/2/3 PCI Video and Audio Decoder [MPEG Port] (rev 05)

lsusb (webcam)
Bus 002 Device 015: ID 046d:092e Logitech, Inc.

dmesg (after error compiling webcvam driver gspca)
[47145.760000] gspca: disagrees about version of symbol video_devdata
[47145.760000] gspca: Unknown symbol video_devdata
[47145.760000] gspca: disagrees about version of symbol video_unregister_device
[47145.760000] gspca: Unknown symbol video_unregister_device
[47145.760000] gspca: disagrees about version of symbol video_device_alloc
[47145.760000] gspca: Unknown symbol video_device_alloc
[47145.760000] gspca: disagrees about version of symbol video_register_device
[47145.760000] gspca: Unknown symbol video_register_device
[47145.760000] gspca: disagrees about version of symbol video_device_release
[47145.760000] gspca: Unknown symbol video_device_release

Revision history for this message
Carlos Blanquer Bogacz (cblanquer) wrote :

This bug happens and is related to bug #108073.

Revision history for this message
Carlos Blanquer Bogacz (cblanquer) wrote : Re: DVB-T drivers and Webcam drivers incompatible => SOLVED

I found instructions that provided a solution to the effects of the problem:
1. Reinstalled U7.04
2. webcam is OK
3. sudo modprobe dvb_core
4. sudo modprobe cx88_dvb

However in Dapper the DVB drivers and the webcam drivers compiled without problem. But as not necessary this is not actually a bug. TO BE CLOSED.

Revision history for this message
Brian Murray (brian-murray) wrote :

This bug report is being closed due to your last comment regarding this being fixed with a configuration change. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the drop down box. You can learn more about bug statuses at http://wiki.ubuntu.com/BugSquad/ManagingStatus . Thank you again for taking the time to report this bug and helping to make Ubuntu better. Feel free to submit any future bugs you may find.

Changed in linux-source-2.6.20:
assignee: nobody → brian-murray
status: New → Fix Released
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