Hi, folks,
Updated CentOS 7 the other day. Updated zoom last night. Ancient (15
yr old) USB camera, Logitech QuickCam Express.
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.
Anyone got any clues? Being a free end user, all zoom offers is the
knowledge base....
mark
> Updated CentOS 7 the other day. Updated zoom last night. Ancient (15 yr > old) USB camera, Logitech QuickCam Express. > > 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 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 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) Hope this helps. Barry
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 sameIt 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 extensionI 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
Le 09/05/2020 ? 22:02, mark a ?crit?:> ?? Updated CentOS 7 the other day. Updated zoom last night. Ancient (15 yr old) > USB camera, Logitech QuickCam Express. > > ?? 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. > > ?? Anyone got any clues? Being a free end user, all zoom offers is the > knowledge base....You might want to take a look at this before using Zoom : https://www.schneier.com/blog/archives/2020/04/security_and_pr_1.html -- Microlinux - Solutions informatiques durables 7, place de l'?glise - 30730 Montpezat Site : https://www.microlinux.fr Mail : info at microlinux.fr T?l. : 04 66 63 10 32 Mob. : 06 51 80 12 12
On Sat, 09 May, 2020 at 16:02:17 -0400, mark wrote:> Hi, folks, > > Updated CentOS 7 the other day. Updated zoom last night. Ancient (15 yr > old) USB camera, Logitech QuickCam Express. > > 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. > > Anyone got any clues? Being a free end user, all zoom offers is the > knowledge base....I recommend installing zoom from flatpak: https://flathub.org/apps/details/us.zoom.Zoom It will pull in the freedesktop runtime, which contains the required libraries. No need to fiddle with LD_PRELOAD and the like.
On 2020-05-09 19:41, Liam O'Toole wrote:> On Sat, 09 May, 2020 at 16:02:17 -0400, mark wrote: >> Hi, folks, >> >> Updated CentOS 7 the other day. Updated zoom last night. Ancient (15 yr >> old) USB camera, Logitech QuickCam Express. >> >> 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. >> >> Anyone got any clues? Being a free end user, all zoom offers is the >> knowledge base.... > > I recommend installing zoom from flatpak: > > https://flathub.org/apps/details/us.zoom.Zoom > > It will pull in the freedesktop runtime, which contains the required > libraries. No need to fiddle with LD_PRELOAD and the like.I'm thoroughly confused. I've yum removed zoom, then copied the flatpak. rep, then flatpak install https://flathub.org/repo/appstream/us.zoom.Zoom.flatpakref,,, and there's no zoom. Flathub's web pages need something... like, somebody to read them and tell them that they don't explain *ANYTHING*. mark
Le 10/05/2020 ? 01:41, Liam O'Toole a ?crit?:> I recommend installing zoom from flatpak: > > https://flathub.org/apps/details/us.zoom.Zoom > > It will pull in the freedesktop runtime, which contains the required > libraries. No need to fiddle with LD_PRELOAD and the like.+1 on that. I've just installed Skype from Flatpak on my workstation. Not only does it work out of the box, it also has the advantage of running in a sandbox that's pretty much isolated from the main system. https://blog.microlinux.fr/skype-linux-flatpak/ Cheers, Niki -- Microlinux - Solutions informatiques durables 7, place de l'?glise - 30730 Montpezat Site : https://www.microlinux.fr Mail : info at microlinux.fr T?l. : 04 66 63 10 32 Mob. : 06 51 80 12 12
Hi, folks,
Updated CentOS 7 the other day. Updated zoom last night. Ancient (15
yr old) USB camera, Logitech QuickCam Express.
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.
Anyone got any clues? Being a free end user, all zoom offers is the
knowledge base....
mark
------------------------------------------
Mark, I am runnning Centos 7.8 with a Logitech Brio webcam that move around to
use on a
multiple of machines that are set up the same way. Cheese worked fine, but Zoom
would not
work at all. I could not get Zoom to work on these until after I installed
'kamoso'.
This ended up being an easy, easy fix for me. Hope it works for you too.
Greg