Based on in-depth analysis, I found the cause of the error：
“Apr 03 12:59:15 ubuntu systemd[1]: Failed to set up mount unit: Device
or resource busy”
call tree on systemd mount.c & unit.c:
mount_dispatch_io
-> mount_load_proc_self_mountinfo
-> mount_setup_unit
-> mount_setup_exis
I think this bug has now been fixed upstream:
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a2418fc4a13b5da8d007a038c0a6a50a54edfabd
Could somebody please backport that patch to the Ubuntu 14.04 kernel?
It's really annoying to re-compile my own mouse kernel module eac
I just installed Ubuntu 9.04 on my G4 Silver PowerMac, with
vmlinux-2.6.28-6-powerpc kernel (NOT the smp version!), And yes, sound
is working completely right again. I think this bug can now be closed
for the new Ubuntu version.
--
No sound in linux-image-2.6.20-8-powerpc G4
https://bugs.launchp
I've tested an Ubuntu Linux SMP kernel today (2.6.22-14-powerpc-smp), and I can
confirm that sound is working again with this kernel!
(I have a Silver PowerMac G4 and sound was not working with the normal non-SMP
kernel)
--
No sound in linux-image-2.6.20-8-powerpc G4
https://bugs.launchpad.ne
I encountered this bug on my silver PowerMac G4:
cat /proc/cpuinfo
[...]
machine : PowerMac3,5
motherboard : PowerMac3,5 MacRISC2 MacRISC Power Macintosh
detected as : 69 (PowerMac G4 Silver)
[...]
cat /dev/sndstat
[...]
Card config:
PowerMac Tumbler (Dev 21) Sub-frame 0
Audio de
Hi Scott!
All i can say that sound is now working quite good on my system again
with that patch. I don't have a second Mac for testing, and I am also
new to this kernel stuff, so I don't have a clue what could cause these
plopping noises on your system. There is a disabled printk line in the
snd_
Hi Dave!
> Thanks so much for fixing this! Would you mind telling me how the
dmasound_awacs.c fix came to your attention? I was completely stuck when
I tried looking into this earlier, maybe I'll learn something :-)
Pure luck :-) I am also completely new to kernel hacking... I read your
message
I have the same problem on my PowerMac G4. After reading the note from Dave
Vasilevsky, I also checked the status in the snd_pmac_pcm_update function, and
it seems that the failing DMA transfer has the status DEAD.
I've then checked the old OSS powermac sound driver in
sound/oss/dmasound/dmasoun
