Public bug reported: I've noticed a similar bug reported for another laptop, the reason for the module not being loaded there was (I quote):
"p4-clockmod introduces unacceptable degrees of latency under normal desktop conditions, and adds little power saving since it has no ability to alter voltage. As a result, we deliberately don't autoload it." ( https://launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/85219 ) Loading p4-clockmod using the ondemand governer increases battery life on the Inspiron 1150 atleast 2 fold (depending on CPU load), and with the conservative governer even more. The latency (I assume this refers to the apparent "responsiveness" of the OS due to the underclocking) is minimal with ondemand, but quite siginficant with conservative. The responsiveness of the ondemand governer can be improved *dramatically* by setting the minimum clock to 650MHz rather than letting it take the default 312MHz. I don't know what kernel information you'd need to change ubuntu to load the module automatically, I've appended the /proc/cpuinfo which I assume is enough to identify the CPU by. --- [EMAIL PROTECTED]:~$ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Celeron(R) CPU 2.60GHz stepping : 9 cpu MHz : 2600.000 cache size : 128 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe up cid xtpr bogomips : 5199.87 clflush size : 64 --- Regards, Matthew Hall P.S. On a much lesser technical note, I really appreciate the ondemand governer. These particular laptops get *extremely* hot if they're not underclocked, I mean to the extent that I've had it turn off due to overheating. It'd be a big step in useability if Ubuntu worked with p4-clockmod out of the box on these machines, Edgy didn't nor does OpenSuSE 10.2. Your time and work doesn't go unnoticed! ** Affects: Ubuntu Importance: Undecided Status: Unconfirmed -- p4-clockmod NOT loaded for Inspiron 1150 Laptop https://launchpad.net/bugs/96886 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
