upon reboot monitor came up with flickerty screen

[ventrical]

After the upgrade of kernel and reboot the VT went black with one line of verbose code then started to flash with full screen of code at least 6 times , top down, bottom up. Then gdm screen and was able to logon.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: linux-image-4.13.0-11-generic 4.13.0-11.12
ProcVersionSignature: Ubuntu 4.13.0-11.12-generic 4.13.1
Uname: Linux 4.13.0-11-generic x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: ventrical 1935 F.... pulseaudio
 /dev/snd/controlC0: ventrical 1935 F.... pulseaudio
CurrentDesktop: Unity:Unity7:ubuntu
Date: Thu Sep 21 11:26:13 2017
HibernationDevice: RESUME=UUID=73906ed5-985c-4166-9fc2-13fb389012cf
InstallationDate: Installed on 2017-09-05 (16 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170820)
IwConfig:
 lo no wireless extensions.

 enp4s0 no wireless extensions.
MachineType: Dell Inc. Precision WorkStation T3400
ProcFB: 0 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-11-generic root=UUID=cdef7dd2-7ccb-446a-a39a-df77fea13ef0 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.13.0-11-generic N/A
 linux-backports-modules-4.13.0-11-generic N/A
 linux-firmware 1.168
RfKill:

SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/31/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A03
dmi.board.name: 0TP412
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 7
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA03:bd01/31/2008:svnDellInc.:pnPrecisionWorkStationT3400:pvr:rvnDellInc.:rn0TP412:rvr:cvnDellInc.:ct7:cvr:
dmi.product.name: Precision WorkStation T3400
dmi.sys.vendor: Dell Inc.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Does this bug go away if you boot back into the prior kernel version?

[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 v4.14 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'.

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/v4.14-rc2/

[ventrical (dale-f-beaudoin)]

Hi Joseph,

I had installed lightdm and removed gdm3 and it boots just fine now. Then all other packages were clean because I used it to build a unity7 17.10 remix and so it is running on the 4.13 kernel by default. All other kernels being removed.

If I have time I may try to emulate bug - but for now you can mark this bug as invalid.

regards..

Dale

[ventrical (dale-f-beaudoin)]

tested 4.14. .x-x kernel. no network but flickerty not there.

[ventrical (dale-f-beaudoin)]

Here is vid of one flickerty session.

It is itermittent. Some boots will be fine. Othes will be full scree flickering of verbose code. In this vid it is one small flash and several cursor flashes between plymouth and gdm login screen.

https://www.youtube.com/watch?v=7UlXdWneUw8&feature=youtu.be

[BertN45 (lammert-nijhof)]

I have the same problem running the Ubuntu Beta in Virtualbox with as far as I remember 4.13.0.11. All other Ubuntu Betas (L-, X- and Mate) did use that Linux version too. I tried a fresh install from the latest second daily build of 26-9 with the same result. The symptom is a VM-screen that switches from size 4-6 times and disk and network lights of Vbox status bar died out and we are left with a black screen.
The host is Ubuntu 16.04 and Vbox is 5.1.28.
I can't create a memory dump, since CTR + ALT + Fn is catched by the Host system.

[BertN45 (lammert-nijhof)]

Forgot to mention the other Ubuntu Betas (L-, X- and Mate) have no problem and work normally.