Public bug reported: After the upgrade from 13.10 to 14.04 fan on my Dell Latitude E5520 is working weird. It works in cycles as follows: 100% for about 0.1s 0% 0.1s cca 60% for 2 - x seconds, depending on cpu temperature I think.
Before the upgrade fan speed has been set depending on cpu temperature SMOOTHLY with some hysteresis. I'm reporting this because of this bug report for other hardware: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1324448 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-29-generic 3.13.0-29.53 ProcVersionSignature: Ubuntu 3.13.0-29.53-generic 3.13.11.2 Uname: Linux 3.13.0-29-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: latal 3590 F.... pulseaudio /dev/snd/pcmC0D0p: latal 3590 F...m pulseaudio CurrentDesktop: Unity Date: Sat Jun 7 17:54:29 2014 EcryptfsInUse: Yes InstallationDate: Installed on 2012-07-10 (696 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MachineType: Dell Inc. Latitude E5520 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-29-generic root=UUID=83b4c35b-1649-4b2c-9d62-5c56bdcaa949 ro quiet splash intel_pstate=enable vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-29-generic N/A linux-backports-modules-3.13.0-29-generic N/A linux-firmware 1.127.2 SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2014-05-09 (29 days ago) dmi.bios.date: 11/30/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A05 dmi.board.name: 03PH4G dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA05:bd11/30/2011:svnDellInc.:pnLatitudeE5520:pvr01:rvnDellInc.:rn03PH4G:rvrA01:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E5520 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug kernel-bug-exists-upstream trusty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1327581 Title: Dell Latitude E5520 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1327581/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
