Control: reassign -1 udev As alsas' udev rules are installed by udev package.
-- Elimar * Trent W. Buck <trentb...@gmail.com> [2015-10-01 11:26 +1000]: > Package: alsa-utils > Version: 1.0.29-1 > Severity: minor > > I spotted this message when studying alsa-utils' udev rules: > > # alsactl -E HOME=/run/alsa --file /dev/null restore 0 > No state is present for card PCH > ** alsactl: sysfs_init:48: sysfs path '/sys' is invalid > > Found hardware: "HDA-Intel" "Realtek ALC662 rev3" > "HDA:10ec0662,10ec0662,00100300" "0x10ec" "0x0662" > Hardware is initialized using a generic method > No state is present for card PCH > > # echo $? > 99 > > This code assumes that a working /sys will have a /sys/kernel/uevent_helper. > This is not a safe assumption in custom 3.16+ kernels. > See also https://bugs.debian.org/752742 > Also /usr/share/doc/systemd/README.gz calls it a "legacy" interface, > though I think it is still essential elsewhere (e.g. busybox mdev). > > alsactl/init_sysfs.c-32-static int sysfs_init(void) > alsactl/init_sysfs.c:46: strlcat(sysfs_test, > "/kernel/uevent_helper", sizeof(sysfs_test)); > alsactl/init_sysfs.c-47- if (access(sysfs_test, F_OK)) { > alsactl/init_sysfs.c-48- error("sysfs path '%s' is > invalid\n", sysfs_path); > alsactl/init_sysfs.c-49- return -errno; > alsactl/init_sysfs.c-50- } > > I don't know what sysfs_init() *should* check for. > > I don't know what alsactl does differently if it thinks /sys is working. > > alsactl restore *does* change my mixer levels, so this might be a non-issue: > > # echo 1 >/sys/class/sound/hdaudioC0D2/reconfig > # amixer >before > # alsactl -E HOME=/run/alsa --file /dev/null restore 0 > [...] > # amixer >after > # cmp before after > before after differ: byte 164, line 5 > > _______________________________________________ > Pkg-alsa-devel mailing list > pkg-alsa-de...@lists.alioth.debian.org > http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-alsa-devel > -- Never make anything simple and efficient when a way can be found to make it complex and wonderful ;-)
