what device is char-major-10-135

[K.C. Chan]

All,
I just compiled and booted from kernel 2.4.20, during the boot process I am getting "modprobe can't locate char-major-10-135" Does anyone know what device this is? Thanks.

[Ron Kinner · Accepted solution]

http://www.linuxfromscratch.org/faq/#char-major-10-135



7.3.2. modprobe: Can't locate module char-major-10-135

"char-major-10-135" refers 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. See /usr/src/linux/Documentation/rtc.txt for more information.

The error is because something, most likely hwclock, is trying to use /dev/rtc 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".

Ron