Nouveau makes it worse. When I start Android Studio, Firefox immediately grays out, AS stops loading before it even opens a window. Then the computer remains frozen, until I stop java processes in a shell. Also, I don't see how a graphics issue can make CPU2 or CPU3 hang, but never one of the other CPUs.
It can't be just a bug in Android Studio, because AS should not be capable of hanging up my computer. Also, it can't be just a bug in Ubuntu or in the bios or cpu, because it only happens with Android Studio (except once in gedit and once in a shell). I suspect AS does something other software doesn't do, which triggers a glitch elsewhere. Yesterday night, I ran Prime95 software to calculate Mersenne prime numbers. This kept my cpus at 500% with low priority processes. All software would still run normally, not slower, but AS wouldn't run. It pushed prime to using over 600%, which is weird, and it wouldn't start, just hang until killed. I tried Prime95 because they found a glitch in Intel Skylake cpus. My cpu is 5th generation, not Skylake. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1531845 Title: Xorg freeze Status in xorg package in Ubuntu: Incomplete Bug description: I have multiple freezes per day. I can trigger this by starting Android Studio. Sometimes it happens in Gedit loading a large file, or in a shell window. What I see is that in System Monitor, CPU2 or CPU3 (there's 12, only 2 or 3 go to 100% during freeze) goes to 100% and stays there for 5 or more minutes. All other CPUs are at less than 5%. In the "processes" tab no processes use significant CPU. But when I go to a shell (ctrl-alt-F2) and type "top", I see Xorg taking ~50% CPU and 2.4% memory. I tried different versions of AS, different versions of Gradle, tried Oracle Java instead of openjdk, no change. Most of the time, Firefox also freezes after a short while, then everything freezes. The freeze does stop, after a maximum of 15 minutes. Sometimes, I need to do a hard reboot. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xorg 1:7.7+7ubuntu4 ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6 Uname: Linux 4.2.0-23-generic x86_64 NonfreeKernelModules: nvidia .proc.driver.nvidia.registry: Binary: "" .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 352.63 Sat Nov 7 21:25:42 PST 2015 GCC version: gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2) ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 BootLog: CurrentDesktop: Unity Date: Thu Jan 7 13:12:34 2016 DistUpgraded: Fresh install DistroCodename: wily DistroVariant: ubuntu GpuHangFrequency: Continuously GpuHangReproducibility: Yes, I can easily reproduce it GpuHangStarted: Since before I upgraded GraphicsCard: NVIDIA Corporation GM206 [GeForce GTX 960] [10de:1401] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Micro-Star International Co., Ltd. [MSI] Device [1462:3205] InstallationDate: Installed on 2015-12-13 (24 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: MSI MS-7881 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-23-generic.efi.signed root=UUID=eea1d4c7-5f21-40a5-b73d-fed6b0a48f69 ro noprompt persistent quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg freeze UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/20/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1.70 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: X99S XPOWER AC (MS-7881) dmi.board.vendor: MSI dmi.board.version: 1.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MSI dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.70:bd03/20/2015:svnMSI:pnMS-7881:pvr1.0:rvnMSI:rnX99SXPOWERAC(MS-7881):rvr1.0:cvnMSI:ct3:cvr1.0: dmi.product.name: MS-7881 dmi.product.version: 1.0 dmi.sys.vendor: MSI version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4 version.nvidia-graphics-drivers: nvidia-graphics-drivers-* N/A version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3 xserver.bootTime: Thu Jan 7 13:11:54 2016 xserver.configfile: default xserver.devices: input Power Button KEYBOARD, id 6 input Power Button KEYBOARD, id 7 input Logitech USB Optical Mouse MOUSE, id 8 input AT Translated Set 2 keyboard KEYBOARD, id 9 xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.17.2-1ubuntu9.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1531845/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
