** Changed in: linux (Ubuntu Xenial)
Assignee: Robert Hooker (sarvatt) => (unassigned)
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https://bugs.launchpad.net/bugs/1608042
Title:
64-bit XUbuntu 16.04 "Xenial" hybrid graphics (Intel + AMD): AMDGPU
crashes / freezes / hangs entire system
Status in linux package in Ubuntu:
Triaged
Status in xserver-xorg-video-amdgpu package in Ubuntu:
Confirmed
Status in linux source package in Xenial:
Triaged
Status in xserver-xorg-video-amdgpu source package in Xenial:
Confirmed
Bug description:
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
Ctrl-Alt-F[1-6] (switch TTY/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.
The attached file "amdgpu-bug.txt" is the reason why I'm pretty
convinced that the problem is being caused by the amdgpu driver
(although it seems to be related to how it interacts with the kernel,
thus maybe the problem is kernel-related).
WORKAROUND: Boot from GRUB with the nomodeset parameter. The graphics
performance becomes terribly slow.
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Apport output:
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
BootLog:
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: XFCE
DistUpgraded: Fresh install
DistroCodename: xenial
DistroRelease: Ubuntu 16.04
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation Broadwell-U Integrated Graphics [8086:1616] (rev 09)
(prog-if 00 [VGA controller])
Subsystem: Dell Broadwell-U Integrated Graphics [1028:0643]
Subsystem: Dell Topaz XT [Radeon R7 M260/M265] [1028:0643]
InstallationDate: Installed on 2016-07-29 (1 days ago)
InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
MachineType: Dell Inc. Inspiron 5548
Package: xorg 1:7.7+13ubuntu3
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic.efi.signed
root=UUID=24cb3fff-5c01-4674-9c59-58d7d776fd70 ro quiet splash nomodeset
vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Renderer: Software
Tags: xenial ubuntu
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
dmi.bios.date: 10/12/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0YDTG3
dmi.board.vendor: Dell Inc.
dmi.board.version: A02
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A06
dmi.modalias:
dmi:bvnDellInc.:bvrA06:bd10/12/2015:svnDellInc.:pnInspiron5548:pvrA06:rvnDellInc.:rn0YDTG3:rvrA02:cvnDellInc.:ct8:cvrA06:
dmi.product.name: Inspiron 5548
dmi.product.version: A06
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20160325-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.12-1build2
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