Please can you look into this. It has been marked as Invalid, however, it is not a support request as has been assumed.
My card is a card 1: sofhdadsp [sof-hda-dsp], device 0: HDA Analog (*) [] Subdevices: 0/1 Subdevice #0: subdevice #0 uname -a Linux rtx 5.8.0-50-generic #56~20.04.1-Ubuntu SMP Mon Apr 12 21:46:35 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux All software has been updated to the latest versions. With the default configuration jackd -R -d alsa -d hw:1,0 ... ALSA: cannot set period size to 1024 frames for capture ALSA: cannot configure capture channel As reported jackd starts with a buffer size of 1008, a non standard, non power of 2 jackd -R -d alsa -d hw:1,0 -p 1008 creating alsa driver ... hw:1,0|hw:1,0|1008|2|48000|0|0|nomon|swmeter|-|32bit configuring for 48000Hz, period = 1008 frames (21.0 ms), buffer = 2 periods ALSA: final selected sample format for capture: 24bit little-endian ALSA: use 2 periods for capture ALSA: final selected sample format for playback: 24bit little-endian ALSA: use 2 periods for playback I consider this a bug as the manual page for jackd states -p, --period int Specify the number of frames between JACK process() calls. This value must be a power of 2, and the default is 1024. And the current situation is that the only way jackd starts is with a non power of 2. Also buffer sizes of 240, 120 works jackd -R -d alsa -d hw:1,0 -p 240 creating alsa driver ... hw:1,0|hw:1,0|240|2|48000|0|0|nomon|swmeter|-|32bit configuring for 48000Hz, period = 240 frames (5.0 ms), buffer = 2 periods jackd -R -d alsa -d hw:1,0 -p 120 creating alsa driver ... hw:1,0|hw:1,0|120|2|48000|0|0|nomon|swmeter|-|32bit configuring for 48000Hz, period = 120 frames (2.5 ms), buffer = 2 periods FYI a buffer size of 48 also works however I get another message (maybe because I am not running with a low latency kernel ... yet) Please see attachment for details. ** Attachment added: "jack_buffer_bug.txt" https://bugs.launchpad.net/ubuntu/+source/jackd-defaults/+bug/1872244/+attachment/5491789/+files/jack_buffer_bug.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1872244 Title: Jack audio not working on Ubuntu 20.04 running on a Thinkpad Carbon X1 (7th gen) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/jackd-defaults/+bug/1872244/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
