Relevant log: "uvcvideo: No valid video chain found." This is the Ubuntu bug: https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1433906 I'm seeing this on an up-to-date F23 system running kernel 4.2.6-301. I cannot easily test rawhide on this hardware at the moment but based on the Ubuntu bug, it looks like it would not help.
Latest on this: https://sourceforge.net/p/linux-uvc/mailman/message/34722467/
I am using Lenovo ThinkPad e450 with Fedora 23 with my web cam is not working.
Hi, I am using a Lenovo Thinkpad e455 with Fedora 23 and I have the same error. $ lsusb -d 5986:055a Bus 002 Device 002: ID 5986:055a Acer, Inc $ lsmod | egrep -i "media|videodev" videodev 167936 4 uvcvideo,v4l2_common,videobuf2_core,videobuf2_v4l2 media 24576 2 uvcvideo,videodev $ dmesg | grep uvcvideo [ 10.612919] uvcvideo: Found UVC 1.00 device Integrated Camera (5986:055a) [ 10.626211] uvcvideo: No valid video chain found. [ 10.626342] usbcore: registered new interface driver uvcvideo [ 7147.591264] usbcore: deregistering interface driver uvcvideo [ 7167.784567] uvcvideo: Found UVC 1.00 device Integrated Camera (5986:055a) [ 7167.784574] uvcvideo: Forcing device quirks to 0x1000 by module parameter for testing purpose. [ 7167.784577] uvcvideo: Please report required quirks to the linux-uvc-devel mailing list. [ 7167.785804] uvcvideo: No valid video chain found. [ 7167.786046] usbcore: registered new interface driver uvcvideo
I am using a Lenovo Thinkpad e550 and I do have the same error with Fedora 23.
Hello Guys, I am using Lenovo ThinkPad e450, and I was having the same problem. my web cam was not working because my laptop has Acer 5986:055a web cam and Fedora 23 does not have any module for it. But after patching my kernel, now my web cam is working fine with cheese and Skype as well. Please do the following: Step 1: Change the Directory to "/usr/src/" [root@Thinkpad-E450 ~]# cd /usr/src/ Step 2: Now Download latest kernel from "kernel.org" using following command and than extract it. [root@Thinkpad-E450 src]# wget https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.4.1.tar.xz [root@Thinkpad-E450 src]# tar -xvf linux-4.4.1.tar.xztar.xz [root@Thinkpad-E450 src]# cd linux-4.4.1/ Step 3: Now Download the patch for web cam [root@Thinkpad-E450 linux-4.4.1]# wget -O webcam.patch https://launchpadlibrarian.net/229627414/0001-uvcvideo-Acer-Integrated-Camera-5986-055a-add-UVC_QU.patch Step 4: Now patch it into kernel configuration using the following command [root@Thinkpad-E450 linux-4.4.1]# cat webcam.patch | patch -p1 --dry-run [root@Thinkpad-E450 linux-4.4.1]# cat webcam.patch | patch -p1 Step 5: Now install some dependency to compile and install kernel from source code [root@Thinkpad-E450 linux-4.4.1]# dnf install fedpkg fedora-packager rpmdevtools ncurses-devel pesign* gcc* qt* make* -y [root@Thinkpad-E450 linux-4.4.1]# dnf install qt3-devel qt-devel libXi-devel gcc-c++ openssl* -y [root@Thinkpad-E450 linux-4.4.1]# /usr/libexec/pesign/pesign-authorize-users Step 6: Now use the following commands to compile the Linux Kernel [root@Thinkpad-E450 linux-4.4.1]# make clean [root@Thinkpad-E450 linux-4.4.1]# make mrproper [root@Thinkpad-E450 linux-4.4.1]# make mrproper [root@Thinkpad-E450 linux-4.4.1]# make menuconfig [root@Thinkpad-E450 linux-4.4.1]# make [root@Thinkpad-E450 linux-4.4.1]# make modules [root@Thinkpad-E450 linux-4.4.1]# make modules_install [root@Thinkpad-E450 linux-4.4.1]# make install [root@Thinkpad-E450 linux-4.4.1]# reboot
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 23 kernel bugs. Fedora 23 has now been rebased to 4.7.4-100.fc23. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 24 or 25, and are still experiencing this issue, please change the version to Fedora 24 or 25. If you experience different issues, please open a new bug report for those.
Confirmed same issue en Fedora 24: lsusb -d 5986:055a Bus 002 Device 004: ID 5986:055a Acer, Inc lsmod |egrep -i "media|videodev" videodev 172032 3 uvcvideo,videobuf2_core,videobuf2_v4l2 media 36864 2 uvcvideo,videodev dmesg | grep uvcvideo [ 9.077950] uvcvideo: Found UVC 1.00 device Integrated Camera (5986:055a) [ 9.077979] uvcvideo: No valid video chain found. [ 9.078006] usbcore: registered new interface driver uvcvideo cat /etc/redhat-release Fedora release 24 (Twenty Four)
Confirmed for F24 by Comment #8 (thanks!) I don't have easy access to this hardware, but I suspect its still present in Rawhide too. There is a patch here: https://bugs.launchpad.net/ubuntu/+source/linux-lts-utopic/+bug/1433906 Sorry, I haven't tried it.
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There are a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 24 kernel bugs. Fedora 25 has now been rebased to 4.10.9-100.fc24. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 26, and are still experiencing this issue, please change the version to Fedora 26. If you experience different issues, please open a new bug report for those.
Works for Fedora 25. Thanks. uname -r 4.10.8-200.fc25.x86_64 lsusb -d 5986:055a Bus 002 Device 005: ID 5986:055a Acer, Inc lsmod | egrep -i "media|videodev" videodev 172032 3 uvcvideo,videobuf2_core,videobuf2_v4l2 media 40960 2 uvcvideo,videodev dmesg | grep uvcvideo [ 5.232807] uvcvideo: Found UVC 1.00 device Integrated Camera (5986:055a) [ 5.240633] uvcvideo 2-8:1.0: Entity type for entity Extension 4 was not initialized! [ 5.240636] uvcvideo 2-8:1.0: Entity type for entity Processing 2 was not initialized! [ 5.240638] uvcvideo 2-8:1.0: Entity type for entity Camera 1 was not initialized! [ 5.242266] usbcore: registered new interface driver uvcvideo