Ticket #9325 (closed defect: worksforme)
RTC device not detected in Linux guest
|Reported by:||nmalinoski||Owned by:|
Host: Windows 7 Enterprise x64 Guest: Gentoo Linux 2.6.39-r3 x86_64
Using Device Drivers -> Real Time Clock -> PC-style 'CMOS' in the kernel config, no RTC devices are found on boot, causing hwclock to produce a "Cannot access the Hardware Clock via any known method." error on boot, and "hwclock: Open of /dev/rtc failed, errno=2: No such file or directory" and "No usable clock interface found." errors when 'hwclock --debug' is run as root.
However, disabling Device Drivers -> Real Time Clock and using Device Drivers -> Character Devices -> Enhanced Real Time Clock Support (legacy PC RTC driver) instead, no error is produced on boot, and hwclock behaves properly.