apport information ** Tags added: apport-collected
** Description changed: COMPUTER: Dell Inspiron 5548 laptop CPU: Intel(R) Core(TM) i7-5500U CPU @ 2.40GHz GRAPHICS: Intel-AMD hybrid: - CPU-integrated: Intel Corporation Broadwell-U Integrated Graphics (driver: i915) - GPU: Advanced Micro Devices, Inc. [AMD/ATI] Topaz XT [Radeon R7 M260/M265] (driver: amdgpu) OPERATING SYSTEM: 64-bit GNU/Linux XUbuntu 16.04 "Xenial" KERNEL: 4.4.0-31-generic PROBLEM: system hangs / freezes very frequently. I have Xscreensaver installed and noticed that when it's running an OpenGL animation (screensaver) and I move the touchpad pointer the screen freezes. I can still turn the keyboard LED backlight on and off (hence: keyboard doesn't stop working) but the pointer won't move (touchpad is locked) and I can't Alt-F1 (switch terminals). Only solution is to power off my laptop (press and hold the power button). I usually select the "Molecule" screensaver (it uses OpenGL), then I click the "preview" button and wait for about 20 seconds, then I click the touchpad and the computer hangs. When I used XUbuntu 14.04 "Trusty" with AMD's fglrx (proprietary) driver I didn't experience such issue. After upgrading to 16.04 "Xenial" (which doesn't support fglrx module/driver) amdgpu module is loaded by default but very frequently hangs the entire system. Sometimes I'm quick enough to go to TTYS1 and then I get to see some messages such as "HARD LOCKUP on CPU0" and "HARD LOCKUP on CPU1". However, it's not a hardware problem because I've already executed the Dell Hardware Diagnostics straight from the boot (it's an EFI utility), it tested all the hardware components (CPU, GPU, RAM, keyboard, touchpad, hard disk etc.) and didn't detect any faulty component. => If I boot from GRUB with the "nomodeset" parameter the problem disappears completely, although graphics performance becomes terribly slow. But I can then preview the "Molecule" screensaver as many times as I want and nothing locks / hangs / freezes. The attached file "amdgpu-bug.txt" is the reason why I'm pretty convinced that the problem is being caused by the amdgpu driver. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xserver-xorg-video-amdgpu 1.1.0-1 ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13 Uname: Linux 4.4.0-31-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 Date: Sat Jul 30 07:01:32 2016 InstallationDate: Installed on 2016-07-29 (1 days ago) InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) ProcEnviron: LANGUAGE=pt_BR:pt:en TERM=xterm PATH=(custom, no user) LANG=pt_BR.UTF-8 SHELL=/bin/bash SourcePackage: xserver-xorg-video-amdgpu UpgradeStatus: No upgrade log present (probably fresh install) + --- + ApportVersion: 2.20.1-0ubuntu2.1 + Architecture: amd64 + CurrentDesktop: XFCE + DistroRelease: Ubuntu 16.04 + InstallationDate: Installed on 2016-07-29 (1 days ago) + InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) + Package: xserver-xorg-video-amdgpu 1.1.0-1 + PackageArchitecture: amd64 + ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13 + Tags: xenial + Uname: Linux 4.4.0-31-generic x86_64 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm audio cdrom dialout dip fax floppy lpadmin netdev plugdev sambashare scanner sudo tape users video + _MarkForUpload: True ** Attachment added: "Dependencies.txt" https://bugs.launchpad.net/bugs/1608042/+attachment/4710199/+files/Dependencies.txt -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-amdgpu in Ubuntu. https://bugs.launchpad.net/bugs/1608042 Title: 64-bit XUbuntu 16.04 "Xenial" hybrid graphics (Intel + AMD): AMDGPU crashes / freezes / hangs entire system To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-amdgpu/+bug/1608042/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
