Conflict between webcam and wifi
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
Medium
|
Unassigned |
Bug Description
Hi, I'm using Kubuntu 9.10, tried Kubuntu 10.04, same problem there. Also tried opensuse 11.2, also same problem there.
Problem: When I start using my webcam, my wifi disconnects and is unable to restart. On the other hand, my webcam only works with wifi disabled.
Those are the components concerned:
Bus 001 Device 003: ID 148f:2573 Ralink Technology, Corp. RT2501USB Wireless Adapter
Bus 001 Device 004: ID 04f2:b022 Chicony Electronics Co., Ltd Gateway USB 2.0 Webcam
Workaround: Disabled uvcvideo by blacklisting it. When I want to use my webcam, I need a Cable-LAN connection and starting it manually with sudo modprobe uvcvideo
First I thought, this bug is related to bug #435352, but as this seems to be solved with an kernel-update, and mine isn't, it seems to be a new one. In var/log/debug and messages there is no suspicious entry about that. This bug affects all applications that use my webcam (Kopete, Skype, luvcview, etc.)
Here's the difference when using luvcview:
WIFI disabled:
luvcview 0.2.4
SDL information:
Video driver: x11
A window manager is available
Device information:
Device path: /dev/video0
Stream settings:
Frame format: YUYV (MJPG is not supported by device)
Frame size: 640x480
Frame rate: 30 fps
Quit signal received.
Cleanup done. Exiting ...
WIFI enabled:
luvcview 0.2.4
SDL information:
Video driver: x11
A window manager is available
Device information:
Device path: /dev/video0
ERROR opening V4L interface: Cannot send after transport endpoint shutdown
For more infos contact me
---
ApportVersion: 2.6.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
DistroRelease: Ubuntu 12.10
EcryptfsInUse: Yes
HibernationDevice: RESUME=
InstallationMedia: Kubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.1)
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
MachineType: MAXDATA obook2-1
Package: linux (not installed)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
RelatedPackageV
linux-
linux-
linux-firmware 1.95
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
Tags: quantal
Uname: Linux 3.5.0-17-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 09/07/07
dmi.bios.vendor: Phoenix Technologies LTD.
dmi.bios.version: 1.05
dmi.board.name: obook2-1
dmi.board.vendor: MAXDATA
dmi.chassis.type: 10
dmi.chassis.vendor: MAXDATA
dmi.modalias: dmi:bvnPhoenixT
dmi.product.name: obook2-1
dmi.product.
dmi.sys.vendor: MAXDATA
tags: | added: usb webcam wireless |
Changed in ubuntu: | |
status: | Invalid → New |
description: | updated |
tags: | removed: needs-upstream-testing |
tags: | added: kernel-fixed-upstream kernel-fixed-upstream-3.6.2 |
Same problem here with Ubuntu 10.04.
Same wifi device, different webcam.
Bus 001 Device 003: ID 148f:2573 Ralink Technology, Corp. RT2501USB Wireless Adapter
Bus 001 Device 002: ID 0c45:6300 Microdia
I would like to add the following information: after I hit the bug (i.e., I try to use the webcam while connected with the wifi dongle) I could not find any other solution than rebooting for returning to a stable state. Removing/inserting kernel modules does not solve the problem; removing/inserting USB cables for webcam and/or wifi adapter does not solve the problem (moreover, "lsusb" reports the wifi adapter even after it is disconneted). I believe this is a bug of the rt73usb driver.