On 2020-05-09 16:20, Barry Brimer wrote: >> Updated CentOS 7 the other day. Updated zoom last night. Ancient (15 >> yr old) USB camera, Logitech QuickCam Express. (There are zero available newer, that I could get before June.) >> >> If I run LD_PRELOAD=/usr/lib64/libv4l/v4l2convert.so cheese, I get >> video. Zoom, with or without the LD_PRELOAD - no video. I've tried >> stracing zoom, and created a file /etc/ld.so.preload, with the >> contents of /usr/lib64/libv4l/v4l2convert.so, and in strace, I see it >> loading it, but still no video. > > I assume you're using the Zoom Linux client since you updated Zoom. > Thinking out loud .. I wonder what would happen if you: > Booted a CentOS 7.6 kernel keeping all else the same It didn't work with 6.x. I rebuilt the beginning of April to CentOS 7. Didn't work, until I got rid of the default gspca_spca561, and used the gspca_spca508. Updated the beginning of this week, and didn't work until I went back to gspca_spca561. Works 100% of the time with cheese, when I add that preload. > > Booted from a variety of CentOS / Fedora Live CD images to see what > kernels do / don't work if it's even kernel related > > Try using Zoom via Chrome which can do pretty much everything natively > without Zoom extension I was really, really trying to avoid installing chrome. > > Try using Zoom via Chrome with Zoom extension > > Try using Zoom via Firefox with Zoom extension (Zoom with Firefox > without Zoom extension is very limited) Been trying to join a test meeting in firefox, and it opens a new tab, and demands that I use the app. > > Hope this helps. > Thanks for trying.... I may have to try chrome (really didn't want google scanning what I do to sell it. mark