Randomly freezing display HP Zbook 15 G2 AMD FirePro M5100

[Eric Baumann]

Running kernel on Ubuntu 14.04.2.

At random times, (especially when touching the touchpad after not touching it for a period of time), the display goes black !

Using QHD display resolution : 3200x1800

More information about hardware can be found here:

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1434963

Otherwise 14.04.2 runs fine / perfectly on this brand-new machine.

It also seems to happen after the system had been successfully recovered from suspending.

Also, it one time, just wanted to switch on to resume, and the whole display went 'disco', meaning, it was flashing wildly, recovery impossible...

Any help would be greatly appreciated, since HP claims they 'support' 14.04 on this Workstation.
---
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
InstallationDate: Installed on 2015-03-21 (2 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
Package: linux (not installed)
Tags: trusty
Uname: Linux 4.0.0-040000rc5-generic x86_64
UnreportableReason: The running kernel is not an Ubuntu kernel
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
---
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: eric 1540 F.... pulseaudio
 /dev/snd/controlC1: eric 1540 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=5565fff9-d47c-465c-9ef6-7bb37610caca
InstallationDate: Installed on 2015-03-21 (2 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
MachineType: Hewlett-Packard HP ZBook 15 G2
Package: linux (not installed)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-31-generic root=UUID=81792a20-09a6-47d9-be7f-0a6de44a41dd ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.16.0-31.43~14.04.1-generic 3.16.7-ckt5
RelatedPackageVersions:
 linux-restricted-modules-3.16.0-31-generic N/A
 linux-backports-modules-3.16.0-31-generic N/A
 linux-firmware 1.127.11
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: yes
  Hard blocked: no
Tags: trusty
Uname: Linux 3.16.0-31-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 02/26/2015
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: M70 Ver. 01.07
dmi.board.name: 2253
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 03.10
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvrM70Ver.01.07:bd02/26/2015:svnHewlett-Packard:pnHPZBook15G2:pvrA3008CD10003:rvnHewlett-Packard:rn2253:rvrKBCVersion03.10:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ZBook 15 G2
dmi.product.version: A3008CD10003
dmi.sys.vendor: Hewlett-Packard

[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Eric Baumann (eric-mannbaum)]

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[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.0 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-rc5-vivid/

[Eric Baumann (eric-mannbaum)]

It seems to occure only afer the system has been suspended at least once !

Today I even connected a beam for the whole day whilst teaching.
No issues what so ever (despite rather high heat dispersion).
Machine runs very smoothly !

But after having suspeded once, sreen went black (recovery impossible (at least with my knowledge)).

Thanks for any help.

PS: HP seems to claim that Ubuntu Linux should be supported on this new workstation...