2013/6/11 Paul Hartman <[email protected]> > On Mon, Jun 10, 2013 at 7:31 PM, walt <[email protected]> wrote: > > After the recent 3.9 --> 3.10 kernel merge window, udev no longer creates > > /dev/rtc (or /dev/rtc0) during bootup on my ~amd64 machines. (The only > > machines I have now.) > > Not a git-kernel nerd, but just an ordinary kernel nerd. :) > > The kernel RTC driver creates /dev/rtc0 and then I assume udev creates > /dev/rtc from there, so if you are missing rtc0 that's a possible > source of the problem. Which would coincide with your kernel upgrade. > > I know 3.9 introduced a couple new RTC-related option so maybe it > changed around some more to 3.10 series. I would run menuconfig and > see what it thinks you have enabled in that section, just in case > something got lost in transition from one kernel to the next. > > In dmesg on my non-git 3.9.4 kernel it looks like: > > [ 1.237994] rtc_cmos 00:04: RTC can wake from S4 > [ 1.238158] rtc_cmos 00:04: rtc core: registered rtc_cmos as rtc0 > [ 1.238177] rtc_cmos 00:04: alarms up to one month, y3k, 114 bytes > nvram, hpet irqs > [ 1.241101] rtc_cmos 00:04: setting system clock to 2013-06-04 > 04:28:34 UTC (1370320114) > > I'm using the "PC-Style CMOS" RTC driver, and I have all of the > RTC-related options enabled except for the debugging options. > >
I'm using gentoo-sources-3.8.13 - out of your scope, though, but I have recently faced the same issue. I rebuilt the kernel using "--menuconfig", to make sure that all RTC options were enabled. It works, now. Good luck Francisco
