It seems like this has stalled again and I don't understand why. Patches
were posted about 1 month ago and they got some testing feedback within
2 days of availability.
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@binli - here are my testing results with patches:
- gstreamer1.0_1.20.3-0ubuntu2.debdiff
- gst-plugins-base1.0_1.20.1-2.debdiff
- pipewire_0.3.48-1ubuntu4.debdiff
Gnome Shell screen recorder: pass
gst-launch-1.0 video preview: pass
Gnome Shell screen recorder while gst-launch-1.0 video preview
@binli - I'm still on pipewire from jammy-updates:
$ apt-cache policy pipewire
pipewire:
Installed: 0.3.48-1ubuntu2
Candidate: 0.3.48-1ubuntu2
Version table:
*** 0.3.48-1ubuntu2 500
500 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64
Packages
100
@binli - I never found a need to update pipewire; the gstreamer patches
(for gstreamer and gst-plugins-base) seem to be sufficient in my
testing.
I tested your gstreamer & gst-plugins-base packages and they work the same as
the ones I built. I think you could drop "-0ubuntu1binli1" from the
This issue is no longer present in Ubuntu 22.04. Wile using Ubuntu 21.10, the
following workarounds also remedied the issue:
- Run a mainline 5.15.x kernel from
https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D
- Run the Jammy Jellyfish kernel from
I compiled several Ubuntu-5.13.0-x.x tags from
https://kernel.ubuntu.com/git/ubuntu/ubuntu-impish.git/refs/ but the backlight
issue seems to go far back in time. I tested:
- Ubuntu-5.13.0-25.26
- Ubuntu-5.13.0-21.21
- Ubuntu-5.13.0-20.20
- Ubuntu-5.13.0-19.19
- Ubuntu-5.13.0-16.16
In
I just tested signed Ubuntu kernel 5.13.0-28-generic which is in
Proposed right now, but it does not fix the issue. Brightness
adjustments work, but service fails during startup and screen is at full
brightness every boot (at gdm and at GNOME 3 desktop).
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I tested some mainline 5.13.x kernels from
https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D and was able to
find a point release where this issue is resolved. Testing results:
Signed Ubuntu kernel 5.13.0-27-generic: brightness adjustments work, but
service fails during startup and screen
I enabled debug logging for systemd with kernel cmdline:
systemd.log_level=debug systemd.log_target=kmsg log_buf_len=1M printk.devkmsg=on
New log attached to bug report is the output of 'journalctl -b':
systemd-debug.log
Filtering on "backlight" and omitting systemd-logind, this portion looks
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