Distribution: Ubuntu 'Warty' Hardware Environment: Gericom Hollywood 1460 (Centrino) laptop Software Environment: kernel 2.6.8.1 (Ubuntu), 2.6.9 (vanilla) Problem Description: I've got some critical overheating issues on my Gericom Hollywood 1460 laptop, (in fact Mitac 8060B, also rebranded as Advent 7041, Medion MD 40676 or MaxSelect M5Wide). It is a Centrino laptop, see dmesg output attached. I've experienced some crashes just after Ubuntu install and then after kernel compile. Just too late I discovered CPU fan is not running. I verified ACPI 'fan' and 'thermal' modules are loaded, but on 'acpi -V' I got 'no support for device' fan and thermal. Ubuntu kernel is 2.6.8.1. I also custom compiled vanilla 2.6.9, fan stopped on system boot-up and still no support for thermal and fan. On the other hand with Knoppix 3.6 (featuring 2.6.7) the fan is running, even if acpi -V still states no support both for fan and thermal. Needless to say Windows XP runs with no problems, fan speed changes on system load as expected. As I've bought the laptop to run Linux on it I'd be more than happy to help to solve this mystery. I've prepared lspci -vv, cat /proc/interrupts, dmesg, dmidecode and acpidump outputs and I can supply them as needed, they are just too long and I'm not sure if it is ok to add them inline to this report. Vitezslav Kotrla
Created attachment 4164 [details] kernel 2.6.7 dmesg
Created attachment 4165 [details] acpidump output
Created attachment 4166 [details] dmidecode output
Created attachment 4167 [details] /proc/interrupts output
Created attachment 4168 [details] lscpi -vv output (Please let me know if adding multiple attachments is ok, maybe I should suply them in one .tar.gz file next time?) VK
I'm now running 2.6.8.1 without any crashes, CPU throttling works, fan works as supposed depending on system load. Still no support for ACPI fan nor APCI thermal though, but it is not critical anymore as system seems stable. I can submit kernel config or dmesg ACPI output (with ACPI debug turned on) on demand.
This is same as bug 3818. No fan object, but fan works on Windows, not on linux. *** This bug has been marked as a duplicate of 3818 ***