Description of problem: The fan of inspiron 15R (model 5521) does not seem to stop until the temperature drops below 50degrees C, which is very rare for this laptop. When it runs, it runs at full speed. So, most of the time, the laptop is very loud. The fan stops for maybe 30 seconds every ten minutes. Version-Release number of selected component (if applicable): How reproducible: every time Steps to Reproduce: 1. turn on laptop 2. 3. Actual results: fan turns on at full blast most of the time. Expected results: fan only turning on when necessary, and in a more gradual fashion. Additional info:
Has it always done this or did it start with a particular kernel version? If you have run windows on this machine, does the same thing happen when running at full speed? On a number of laptops, the fans are controlled by the firmware and the only thing that can be done is to throttle the CPU to reduce heat.
It's a new laptop, so I cannot tell if it existed beforehand as well. I'll try the windows side and get back. Many thanks!
Hello there. I tested it under win7 (I spent several hours in win7, even got infected with a virus, and cleaned it), and the fan never gets that loud. the laptop is mainly quiet. Back at Fedora 18 this morning. I have the machine up for 10 minutes now, its been very quiet, and then the fan came on, at full blast. I checked right away: $ sensors coretemp-isa-0000 Adapter: ISA adapter Physical id 0: +52.0°C (high = +87.0°C, crit = +105.0°C) Core 0: +49.0°C (high = +87.0°C, crit = +105.0°C) Core 1: +52.0°C (high = +87.0°C, crit = +105.0°C)
I had the machine on all day, and the fan stayed at full blast.
anything else?
I noticed that if I boot using Live Fedora 18 flash disk, the fan stays quiet, and yet the temperatures are in the 54 degrees.. So, the new kernel(s) have this full-fan-blast problem.
For some weeks the problem went away and came back with a recent yum update.. uname -a: 3.9.4-200.fc18.x86_64 #1 SMP Fri May 24 20:10:49 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux Now the fan runs full-time again even with CPU set to conservative, and the machine is idle..
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 18 kernel bugs. Fedora 18 has now been rebased to 3.11.4-101.fc18. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 19, and are still experiencing this issue, please change the version to Fedora 19. If you experience different issues, please open a new bug report for those.
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. It has been over a month since we asked you to test the 3.11 kernel updates and let us know if your issue has been resolved or is still a problem. When this happened, the bug was set to needinfo. Because the needinfo is still set, we assume either this is no longer a problem, or you cannot provide additional information to help us resolve the issue. As a result we are closing with insufficient data. If this is still a problem, we apologize, feel free to reopen the bug and provide more information so that we can work towards a resolution If you experience different issues, please open a new bug report for those.