[Bug 1755863] Re: netbooting the bionic live CD over NFS goes straight to maintenance mode :
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_existing_unit -> mount_add_extras -> unit_set_default_slice: -> unit_set_slice: if (unit_active_state(u) != UNIT_INACTIVE) return -EBUSY; "unit_set_slice" return EBUSY always, because of nfsroot always active state in netbooting, "mount_dispatch_io" give up updating mount state when "mount_load_proc_self_mountinfo" return the error. finally, all systemd mount service failed and then goto emergency shell. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1755863 Title: netbooting the bionic live CD over NFS goes straight to maintenance mode : To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1755863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 967399] Re: [11.10] Elantech trackpoint does not work Lenovo
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 each time I've got to update my kernel package... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/967399 Title: [11.10] Elantech trackpoint does not work Lenovo To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/967399/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 87652] Re: No sound in linux-image-2.6.20-8-powerpc G4
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.launchpad.net/bugs/87652 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 87652] Re: No sound in linux-image-2.6.20-8-powerpc G4
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.net/bugs/87652 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 87652] Re: No sound in linux-image-2.6.20-8-powerpc G4
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 devices: 0: PowerMac Tumbler [...] I am currently using the normal Ubuntu 7.10 kernel (linux 2.6.22), without PREEMPT, and using CONFIG_HZ=250. I also had this problem on Ubuntu 7.04 with kernel 2.6.20. I did _not_ have this problem on Ubuntu 6.10 with kernel 2.6.17 ! ** Description changed: Binary package hint: linux-image-2.6.20-6-powerpc Audio plays (via any audio application) for about 3 seconds, then it blocks, and no further audio is heard until the player is killed. Powerbook G4, c. 2002 vintage with snd_powermac. Audio was fine in Edgy. Example of blocked app: jrh 5289 0.5 0.8 22072 4148 pts/0SLl+ 20:43 0:00 ogg123 /home/shared/audio/cd/Berlioz/TeDeum/00.Te_Deum_Hymne.ogg Snd Modules: snd_powermac 49984 1 snd_aoa_i2sbus 24292 0 snd_pcm_oss53984 0 snd_mixer_oss 20960 1 snd_pcm_oss snd_pcm95812 3 snd_powermac,snd_aoa_i2sbus,snd_pcm_oss snd_page_alloc 11368 1 snd_pcm snd_seq_dummy 4004 0 snd_seq_oss40660 0 snd_seq_midi 10016 0 snd_rawmidi29632 1 snd_seq_midi snd_seq_midi_event 8192 2 snd_seq_oss,snd_seq_midi snd_seq61888 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event snd_timer 26404 2 snd_pcm,snd_seq snd_seq_device 9388 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq snd69812 12 snd_powermac,snd_aoa_i2sbus,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device soundcore 8996 1 snd snd_aoa_soundbus7812 1 snd_aoa_i2sbus this is known to effect the following macs (code name/numbers from cat /proc/cpuinfo) PowerBook3,5 - TiBook 15 inch 1GHz + PowerMac3,5 - PowerMac G4 silver, 933 MHz (Audio: PowerMac Tumbler) -- No sound in linux-image-2.6.20-8-powerpc G4 https://bugs.launchpad.net/bugs/87652 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 87652] Re: No sound in linux-image-2.6.20-8-powerpc G4
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 about the xfer_status in snd_pmac_pcm_update, added some debugging printks in my sources in this function, then found out that the DEAD bit is set as soon as the sound dies. Since I knew that the old OSS driver was still working with newer kernels (at least 2.6.20, I was not able to use it in 2.6.22 anymore), I peeked into the sources there and spotted the DEAD DMA transfer handling in it. I'm also wondering whether this counts as a fix or a workaround. It's somewhat weird that we're now seeing the same problem in the ALSA driver as OSS used to have--but for years these DEAD DMA transfers never showed up in ALSA. Agreed, maybe it's just a workaround. Maybe this patch from Ben Herrenschmidt is causing some troubles with DMA that haven't been there before? Looking at Ben's patch, there is some stuff related to DMA and IDE (which also uses DMA) in it... have you already been in contact with Ben Herrenschmidt because of this? -- No sound in linux-image-2.6.20-8-powerpc G4 https://bugs.launchpad.net/bugs/87652 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 87652] Re: No sound in linux-image-2.6.20-8-powerpc G4
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_pmac_pcm_dead_xfer function. You could enable that line, recompile and then tail -F /var/log/messages to see how often the DMA transfers die on your system. If they die very often, this might be the cause. -- No sound in linux-image-2.6.20-8-powerpc G4 https://bugs.launchpad.net/bugs/87652 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 87652] Re: No sound in linux-image-2.6.20-8-powerpc G4
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/dmasound_awacs.c (which used to work with newer kernels) - and yes, this driver handles DEAD DMA transfers! So I've spent some time porting the DEAD DMA transfer handling code from the old driver to the new one - and now sound it working for me again with kernels 2.6.22 / Ubuntu 7.10. I've attached my patch, would be nice if other users here could try it out, too! ** Attachment added: Patch for broken sound on G4 PowerMac http://launchpadlibrarian.net/11311439/pmac.c.diff -- No sound in linux-image-2.6.20-8-powerpc G4 https://bugs.launchpad.net/bugs/87652 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
