On Tue, Jul 16, 2013 at 2:41 AM, Rusty Russell rusty@rustcorp.com.au wrote:
Philipp Matthias Hahn pmhahn@pmhahn.de writes:
Hello,
My x86_64 systems has some trouble loading some ALSA snd-* modules since the upgrade to 3.10.[01]: Several automatic modprobe calls hang, but loading snd-intel-hda and snd-audio-usb by hand still works.
Not a known problem to me, at least. Perhaps it's a dep loop somehow.
First thing to check is the /etc/modprobe.d/*.conf file that contains these install commands. Did they change besides the kernel upgrade?
[ Not really related to this, but... people/distros should stop using install commands for things like this. By using softdeps kmod is smart enough to detect and (possibly) break loops. With install commands it can't because it has no idea what the install command will do. ]
... 1071 ? S 0:00 sh -c /sbin/modprobe --ignore-install snd && { /sbin/modprobe --quiet snd 1080 ? D 0:00 _ /sbin/modprobe --quiet snd-seq
This was first, and it's waiting. Which means it must be doing something weird, because snd_seq_oss is loading now:
snd_seq_oss 33717 1 - Loading 0xffffffffa041b000
Searching kmod's log, I guess Debian still has:
install snd_seq modprobe --ignore-install snd-seq $CMDLINE_OPTS && { modprobe --quiet snd-seq-midi ; modprobe --quiet snd-seq-oss ; : ; }
Perhaps in the tangle of modprobe install commands somewhere this gets invoked?
# ps axf 460 ? S 0:00 _ [kworker/u8:3] 1087 ? S 0:00 | _ [kworker/u8:3] 1092 ? S 0:00 | _ /sbin/modprobe -q -- snd-seq-client-14
Weird... this is coming from a request_module(). Greping... this should only be coming from
git grep request_module | grep snd-seq-client sound/core/seq/seq_clientmgr.c: request_module("snd-seq-client-%i",
Philipp, which kernel are you upgrading from? I don't see anything to blame in the changes for the past releases. Any chance a bad entry in your .conf was added too? You may want to paste the output of modprobe -c, at least until "# End of configuration files. Dumping indexes now:"
On my systems, that's snd-seq-dummy, which depends on snd_seq. Which, in fact, is already loaded.
Lucas, any clues?
I don't think I could help, but we need more data, like the ones above.
Lucas De Marchi