After updating from 14.04 LTS to 16.04 LTS I see the same issue with Intel J1900 (also baytrail) and the current standard amd64 kernel 4.4.0-34. Video freezes and no input reaches the system any more. No possibility to get out of the deadlock, no keyboard and no further logs produced.
Some research pointed me to other users with the same problem, the initial description matches the case and is quite likely what Thomas Moestl also sees: http://askubuntu.com/questions/761706/ubuntu-15-10-and-16-04-keep- freezing-randomly I manually installed Kernel 4.7.0-040700rc3-generic #201606121131 SMP Sun Jun 12 15:34:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux and can confirm that the issue is solved with this. Unfortunately the current regular kernel does not work, but according to https://bugzilla.kernel.org/show_bug.cgi?id=109051 there is no definitive fix for this yet ** Bug watch added: Linux Kernel Bug Tracker #109051 http://bugzilla.kernel.org/show_bug.cgi?id=109051 -- 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/1530557 Title: Random hard freezes under X on a laptop with Intel BayTrail processor (ASUS R752MA) Status in linux package in Ubuntu: Triaged Bug description: System freezes hard when working under X, sometimes after minutes, sometimes after hours. Usually, but not always, graphics-intensive applications like viewing videos will trigger the hangs after a while, but they can also (much more rarely) occur when e.g. only an xterm is opened and being worked in under Unity. The MagicSysReq keys are not functional any more once the hang has occurred, there is no information in the logs, and no crash dump can be obtained by using the soft or nmi watchdogs, panic_on_oops etc. I have tried the latest mainline kernel build from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D , linux- image-4.4.0-040400rc7-generic_4.4.0-040400rc7.201512272230_amd64.deb (4.4-rc7), and the hangs still occur under the same circumstances. Some research has led me to https://bugzilla.kernel.org/show_bug.cgi?id=109051 , and I believe that it describes the exact problem I am experiencing. WORKAROUND: Use kernel parameter: intel_idle.max_cstate=1 ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: linux-image-4.2.0-22-generic 4.2.0-22.27 ProcVersionSignature: Ubuntu 4.2.0-22.27-generic 4.2.6 Uname: Linux 4.2.0-22-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: tmm 2184 F.... pulseaudio CurrentDesktop: Unity Date: Sat Jan 2 16:56:51 2016 HibernationDevice: RESUME=UUID=f079f6d2-d58a-474c-ae48-d903be124a02 InstallationDate: Installed on 2015-10-21 (72 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) MachineType: ASUSTeK COMPUTER INC. X751MA ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-22-generic root=UUID=dbe91b1d-f01e-4f19-85eb-3877b67143ac ro quiet splash intel_idle.max_cstate=1 vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.2.0-22-generic N/A linux-backports-modules-4.2.0-22-generic N/A linux-firmware 1.149.3 SourcePackage: linux UpgradeStatus: Upgraded to wily on 2015-10-23 (71 days ago) dmi.bios.date: 08/10/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: X751MA.403 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.403:bd08/10/2015: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/1530557/+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
