udev rtc rules

manwichmakesameal · 01-20-2007, 03:19 PM

I'm getting into music recording, and I'm trying to find a good place to find some udev rtc rules. Any help would be greatly appreciated. I'm using a 2.6.19.1 kernel with rtc enabled for /dev. When I boot, I get

Code:

drivers/rtc/hctosys.c: unable to open rtc device (rtc0)

Don't know if that helps. My current udev.rules has

Code:

# misc devices
KERNEL=="agpgart",	NAME="misc/%k", SYMLINK+="%k"
KERNEL=="psaux",	NAME="misc/%k", SYMLINK+="%k"
KERNEL=="rtc",		NAME="misc/%k", SYMLINK+="%k", MODE="0664"
KERNEL=="uinput",	NAME="misc/%k", SYMLINK+="%k"
KERNEL=="inotify",	NAME="misc/%k", SYMLINK+="%k", MODE="0666"

nx5000 · 01-22-2007, 04:48 AM

If /dev/rtc0 doesn't exist, then you can modify the line
KERNEL=="rtc", NAME="misc/%k", SYMLINK+="%k", MODE="0664"

And replace it with

KERNEL=="rtc", NAME="misc/%k", SYMLINK+="%k %k0", MODE="0664"

That should create /dev/rtc0 and /dev/rtc links to /dev/misc/rtc

manwichmakesameal · 01-23-2007, 04:45 PM

Therein lies the problem, /dev/misc/rtc* doesn't exist either. For some reason, it's not creating a device node for rtc anywhere.

studioj · 01-23-2007, 10:16 PM

you might have to load rtc driver (module) at boot to get its devices.
either loading it directly or loading an alsa sequencer that loads it.