Andras Jakatics, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .
If it remains an issue, could you please run the following command in the development release from a terminal, as it will automatically gather and attach updated debug information to this report: apport-collect -p linux REPLACE-WITH-BUG-NUMBER If reproducible, could you also please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags: kernel-fixed-upstream kernel-fixed-upstream-VERSION-NUMBER where VERSION-NUMBER is the version number of the kernel you tested. For example: kernel-fixed-upstream-3.15-rc7 This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag: needs-upstream-testing If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER As well, please remove the tag: needs-upstream-testing Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Project changed: acpi => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Summary changed: - ACPI fan control problem by ACER + [Acer Aspire 5720z] ACPI fan control problem -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/209837 Title: [Acer Aspire 5720z] ACPI fan control problem Status in “linux” package in Ubuntu: Incomplete Bug description: Hello! I bought an Acer Aspire 5720z laptop a half year ago. First I had 7.10, since february Hardy beta. Unfortunately I have the same ACPI problem with both versions: When I turn on the computer, the fan goes with full speed. After Ubuntu starts to boot, the fan stops suddenly. Usually the cpu overheats after about 30min and the bios turns the pc off. After turning it immediately on, and booting ubuntu, The fan speed goes up to max, but stays on the maximum forever. I changed my bios, but the it haven't solve this problem. Then I started to analyze acpi and found an interesting thing: Acpi gets only statically cpu-temp message by the booting. When I start the pc it shows usually 40 C, but if I see the 'sensors' application, I can see that the real temperature goes upper and upper 50-60-70-80.... C and then the turning off by bios. ACPI shows always 40, so as it seems to be low, it won't ever start the fan. After the immediate restarting ACPI shows 70 C and it runs the cpufan on fullspeed. when I look at the sensors data, I can see, that the real cputemp comes down to 25-35C. I can also see cpu speed-step working well, only this fan is the problem for me. I would be very happy if anyone knew the answer for this problem, and naturally I can help you with more infos, if you need. Thanx!! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/209837/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp