retitle 594952 [AMILO L7300] no frequency scaling support (BIOS has broken voltage tables and speedstep-centrino doesn't support Dothan) # guessing found 594952 linux-2.6/2.6.32-21 tags 594952 + upstream quit
Hi Alexey, Alexey wrote: > Computer: Fujitsu-Siemens AMILO L7300 [...] > FATAL: Error inserting acpi_cpufreq: No such device [...] > model name : Intel(R) Pentium(R) M processor 1.73GHz (Dothan) > stepping : 8 [...] > On Ubuntu Karmic/Jaunty all works fine. It uses speedstep_centrino driver, > which is deprecated, but works with BIOS which have broken voltage tables.. See http://bugs.debian.org/638913 for some discussion. Basically, as you've said, this is a bug in your BIOS. That does not mean the problem is hopeless --- it is possible for the kernel to work around well understood BIOS bugs in the worst cases. So, to move forward on this: - Please attach output from "dmesg" and from "acpidump" from immediately after booting. - The next step would be to contact [email protected] and your BIOS vendor, to get the bug well documented. If there is information about the bug already online somewhere, that could be helpful. - Work with the linux-acpi@ people to come up with corrected ACPI tables. Make them available. - Finally, if the BIOS vendor is uncooperative, come up with a patch to add a "quirk" to use an appropriate hard-coded table to match the detected (through DMI, I guess) system. Or add a kernel command line argument to switch between tables, and a tool to detect the right table at run time. Hope that helps, Jonathan -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
