What is char-major-10-135?

[Digital_Froggy]

After I compilied kernel 4.2.16 I keep getting this error at bootup and shutdown. It says modprobe can't locate char-major-10-135. As far as I can tell it has to do with syncing the system clock to the hardware clock. At shutdown I get that error message when it tries to sync the clocks. Can you help. This has been boggling me forever.

[mdwatts]

You are correct. From the Google search.

Errors about char-major-10-135 refer to the character device, major 10, minor 135, which is /dev/rtc. It provides access to the BIOS clock, or RTC, the Real Time Clock. Check /usr/src/linux/Documentation/rtc.txt for more information.

Something, most likely hwclock, is trying to use it but you haven't configured kernel support for it in your kernel. Either delete /dev/rtc so hwclock won't try to use it or enable RTC support in your kernel. It's located in make menuconfig under "Character devices" -> "Enhanced Real Time Clock Support".

[Digital_Froggy]

Thankyou! I'll give it a try tonight!