On 14 January 2014 20:04, Joshua Kramer <joskra42.l...@gmail.com> wrote: > Hello All, > > I have a weird hardware issue with both the ml and lt kernels on CentOS 6. > How can I go about debugging this? > > I have an HP laptop that I just re-installed CentOS 6 on. Using the stock > 2.6 kernel, 95% of the hardware works. However, if I use a 3.10/12 (either > ml or lt) kernel, 99% of the hardware works. Almost. > > With the 3.10/12 kernel, I cannot start cpuspeed. It cannot write to the > file > > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor > > With the 2.6 kernel, cpuspeed runs just fine.
For the distro kernel, kernel-lt and kernel-ml, respectively, what does cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor return? > I'm guessing that the 3.10/12 kernel doesn't have the right cpu speed > scaling drivers compiled in. Highly unlikely and probably an invalid assumption! > Does anyone know how I can tell which driver > the 2.6 kernel uses for this, so I can build it for the 3.10/12 kernel? I'll suggest that you take the configuration file for the distro kernel, kernel-lt & kernel-ml and perform the following transformation -- grep -v '^#' config-* | sort | uniq > sorted-config Then perform a "sdiff" of each pair of sorted-config files. If you discover an apparent defect in the configuration of either the kernel-lt or kernel-ml packages, then please open an RFE at the ELRepo bug tracker [1] and I will take it from there. Alan. [1] http://elrepo.org/bugs/main_page.php _______________________________________________ elrepo mailing list elrepo@lists.elrepo.org http://lists.elrepo.org/mailman/listinfo/elrepo
