Messages in this thread | | | Date | Fri, 27 Aug 2010 04:45:46 -0700 (PDT) | From | Martin Knoblauch <> | Subject | Two problems running 2.6.35.4 on CentOS-5.5 (x86_64) userspace |
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Hi, (please keep me on CC)
in order to improve IO behavior on my brand new DELL Presision M4500 notebook, I have decided to try out a newer kernel compared to the 2.6.18-xxx CentOS one.
Installing 2.6.35.4 went pretty well and besides small problems with two external/proprietary modules (my fault, I know ...) I only see two issues:
a) accessing the HW clock does not work
[root@lbwjxqm1 ~]# hwclock Cannot access the Hardware Clock via any known method. Use the --debug option to see the details of our search for an access method. [root@lbwjxqm1 ~]# hwclock --debug hwclock from util-linux-2.13-pre7 hwclock: Open of /dev/rtc failed, errno=19: No such device. No usable clock interface found. Cannot access the Hardware Clock via any known method. [root@lbwjxqm1 ~]# ls -l /dev/rtc crw------- 1 root root 10, 135 Aug 27 11:44 /dev/rtc
It is well possible, that the problem is in the userspace, but how to find out?
b) kdump does not start
[root@lbwjxqm1 ~]# /etc/init.d/kdump status Kdump is not operational [root@lbwjxqm1 ~]# /etc/init.d/kdump start Starting kdump: [FAILED] [root@lbwjxqm1 ~]# tail /var/log/messages Aug 27 12:52:39 lbwjxqm1 kdump: No crashkernel parameter specified for running kernel Aug 27 12:52:39 lbwjxqm1 kdump: failed to start up
Looking at grub.conf I find:
title CentOS (2.6.35.4) root (hd0,2) kernel /vmlinuz-2.6.35.4 ro root=LABEL=/ rhgb quiet crashkernel=256M@16M initrd /initrd-2.6.35.4.img
So the entry in the messages files looks wrong. Again, this might be a cases of to old userspace (kexec-tools-1.102pre-96.el5_5.2), but who knows
Thanks for any advice on how to debug/fix the issues. Otherwise kernel looks OK. "dmesg" and config are attached.
Cheers Martin ------------------------------------------------------ Martin Knoblauch email: k n o b i AT knobisoft DOT de www: http://www.knobisoft.de[unhandled content-type:application/x-gzip][unhandled content-type:application/x-gzip][unhandled content-type:application/x-gzip] | |