X751MA is also Bay Trail based so cause could be same as here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1531865
I built Ubuntu-4.2.0-23.28 with "drm/i915: Agressive downclocking on Baytrail" reversed and it can be found from here: http://www.helsinki.fi/~jmoheikk/baytrail/ If you could test whether it works or not. -- 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/1518566 Title: Ubuntu 15.10 freezing randomly Status in linux package in Ubuntu: Incomplete Bug description: Ubuntu 15.10 freezing randomly ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-18-generic 4.2.0-18.22 ProcVersionSignature: Ubuntu 4.2.0-18.22-generic 4.2.3 Uname: Linux 4.2.0-18-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: spyros 3013 F.... pulseaudio CurrentDesktop: Unity Date: Sat Nov 21 16:15:04 2015 HibernationDevice: RESUME=UUID=3fbc151c-b9b3-492c-a1f4-c598a0b080bb InstallationDate: Installed on 2015-09-23 (58 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 005: ID 04b4:0060 Cypress Semiconductor Corp. Wireless optical mouse Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. Hub Bus 001 Device 002: ID 0bda:57bc Realtek Semiconductor Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: ASUSTeK COMPUTER INC. X751MA ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-18-generic root=UUID=59242a09-40d6-4231-b79b-543e0a88dbde ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-18-generic N/A linux-backports-modules-4.2.0-18-generic N/A linux-firmware 1.149.2 SourcePackage: linux UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: Upgraded to wily on 2015-11-05 (15 days ago) dmi.bios.date: 01/26/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: X751MA.208 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: X751MA dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX751MA.208:bd01/26/2015:svnASUSTeKCOMPUTERINC.:pnX751MA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX751MA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: X751MA dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1518566/+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