I have Ubuntu 20.04 on HP Elitebook 840 G4. For a few months, the camera is showing "No device found" when I open Cheese. Previously it was working fine. I can not even access the camera with any web application. I'm not sure if it is a hardware or software related problem. What could be the issue?
~$ sudo lshw --class video
Hardware Lister (lshw) -
usage: lshw [-format] [-options ...]
lshw -version
-version print program version ()
format can be
-html output hardware tree as HTML
-xml output hardware tree as XML
-json output hardware tree as a JSON object
-short output hardware paths
-businfo output bus information
options can be
-class CLASS only show a certain class of hardware
-C CLASS same as '-class CLASS'
-c CLASS same as '-class CLASS'
-disable TEST disable a test (like pci, isapnp, cpuid, etc. )
-enable TEST enable a test (like pci, isapnp, cpuid, etc. )
-quiet don't display status
-sanitize sanitize output (remove sensitive information like serial numbers, etc.)
-numeric output numeric IDs (for PCI, USB, etc.)
-notime exclude volatile attributes (timestamps) from output
:~$ /bin/ls -l /dev/video;id
/bin/ls: cannot access '/dev/video': No such file or directory
uid=1000(username) gid=1000(username) groups=1000(username),4(adm),20(dialout),24(cdrom),27(sudo),30(dip),46(plugdev),120(lpadmin),131(lxd),132(sambashare),138(libvirt)
sudo lshw --class videoshow anything? What does/bin/ls /dev/video*;idshow? Please [edit] your post to add new information, properly formatted. Information added via comments is hard for you to format, hard for us to read and ignored by future readers (who have better answers). Please click [edit] and add that vital information to your question so all the facts we need are in the question. Please don't use Add Comment, since that's our way to help you improve your question. All facts about your system and problem should go in the Question. – waltinator Feb 14 '22 at 14:49/bin/ls -l /dev/video*;id. I omitted the-l(long listing) flag. – waltinator Feb 14 '22 at 17:55