my laptop freezes at the login screen

[Luigi Iapichino]

I apologise in advance, this is my first report, therefore I am not sure if everything has been automatically collected, or if I need to provide further information than a short explanation of the problem.

After updating the kernel at 4.4.0-128 on Ubuntu 16.04, first I had massive problems with the sound drivers. Then they disappeared (by themselves I would say, I had many tests but I don't think I screwed up anything serious) and, instead, now my sistem freezes at login screen. Sometimes it gives me the message that the wireless has been found. The mouse is available but I cannot interact with the screen, and also the clock is frozen. I have to brutally switch off the laptop for rebooting. A further kernel update to 4.4.0-130 didn't help, either.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-130-generic 4.4.0-130.156
ProcVersionSignature: Ubuntu 4.4.0-130.156-generic 4.4.134
Uname: Linux 4.4.0-130-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: luigi 2426 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Jul 3 17:31:25 2018
HibernationDevice: RESUME=UUID=c24386f7-c59c-494d-b58d-abced7cc343c
InstallationDate: Installed on 2017-02-28 (489 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 8087:0a2a Intel Corp.
 Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
 Bus 001 Device 002: ID 174f:2408 Syntek
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 80TV
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-130-generic.efi.signed root=UUID=e98922f5-e948-421c-8d5f-2d7e1ad4dfe1 ro recovery nomodeset
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-130-generic N/A
 linux-backports-modules-4.4.0-130-generic N/A
 linux-firmware 1.157.19
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/10/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: 3JCN23WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: Torronto 5C2
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo ideapad 310-15IKB
dmi.modalias: dmi:bvnLENOVO:bvr3JCN23WW:bd11/10/2016:svnLENOVO:pn80TV:pvrLenovoideapad310-15IKB:rvnLENOVO:rnTorronto5C2:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrLenovoideapad310-15IKB:
dmi.product.name: 80TV
dmi.product.version: Lenovo ideapad 310-15IKB
dmi.sys.vendor: LENOVO

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

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.18 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/v4.18-rc3

[Oleksii (galexey)]

Same issue.
Works OK on 4.4.0-127-generic but freezes on 128/130.

Noticed that it might be some issue with audio as no 'login' sound played when login screen is shown.

[Luigi Iapichino (liapi)]

Thanks for your feedback.

Joseph, the issue started after updating the kernel to 4.4.0-128. The version 4.4.0-127 is the last one working correctly. The issue started as a sound driver problem (drivers were somehow completely gone), but when I first experienced it I could still login. Afterwards it started freezing at the login screen. This corroborates the comment from Oleksii.

For testing the latest upstream kernel, I followed the procedure described in the page you provided. Unfortunately, while installing the kernel files, I had an issue with a dependency from libssl1.1 which is not installed, and as far as I can see not available for Ubuntu 16.04. Do you have any suggestion for solving this, other than upgrading (which I would avoid for the time being)? Sorry, as I already mentioned it is my first contribution to a bug report.

[Luigi Iapichino (liapi)]

I am sorry that I could not contribute in the way described above. Any chance that my request can be processed anyway? I see that there is no activity on this, and at some point this report will expire. Just to provide a little update: the version 4.4.0-131 does not improve the problem. I am convinced that it has to do with the audio, as Oleksii described.
Thanks in advance.

[Oleksii (galexey)]

4.4.0-133 also didn't fixed the issue.

[Luigi Iapichino (liapi)]

Just for the records: I upgraded my Ubuntu to 18.04.1, running the kernel 4.15.0-36-generic, and the problem disappeared.