Screen freeze

[Alex Ihnatovitch]

Freezes randomly without any traceable pattern. Windows become unresponsive while the cursor works.
To unfreeze I have to press the OFF button of my HP ProBook and then click on "Cancel" in the shutdown dialogue. That unfreezes the windows. May happen several times per session, may not happen at all.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Wed Jul 15 22:32:43 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation HD Graphics 620 [8086:5916] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Hewlett-Packard Company HD Graphics 620 [103c:822c]
InstallationDate: Installed on 2020-06-19 (26 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 138a:003f Validity Sensors, Inc. VFS495 Fingerprint Reader
 Bus 001 Device 003: ID 8087:0a2a Intel Corp.
 Bus 001 Device 002: ID 05c8:03a0 Cheng Uei Precision Industry Co., Ltd (Foxlink) HP HD Camera
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: HP HP ProBook 430 G4
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-40-generic root=UUID=36191f51-931b-47be-bfdb-1553e0425aad ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/05/2016
dmi.bios.vendor: HP
dmi.bios.version: P85 Ver. 01.03
dmi.board.name: 822C
dmi.board.vendor: HP
dmi.board.version: KBC Version 42.61
dmi.chassis.asset.tag: 5CD7065D4K
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.modalias: dmi:bvnHP:bvrP85Ver.01.03:bd12/05/2016:svnHP:pnHPProBook430G4:pvr:rvnHP:rn822C:rvrKBCVersion42.61:cvnHP:ct10:cvr:
dmi.product.family: 103C_5336AN HP ProBook
dmi.product.name: HP ProBook 430 G4
dmi.product.sku: Y7Z51EA#ACB
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.8-0ubuntu1~20.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

[Daniel van Vugt (vanvugt)]

If the cursor still works then that's Xorg which is still working and only gnome-shell has frozen or crashed, so...

Thank you for taking the time to report this bug and helping to make Ubuntu better. It sounds like some part of the system has crashed. To help us find the cause of the crash please follow these steps:

1. Look in /var/crash for crash files and if found run:
    ubuntu-bug YOURFILE.crash
Then tell us the ID of the newly-created bug.

2. If step 1 failed then look at https://errors.ubuntu.com/user/ID where ID is the content of file /var/lib/whoopsie/whoopsie-id on the machine. Do you find any links to recent problems on that page? If so then please send the links to us.

3. If step 2 also failed then apply the workaround from bug 994921, reboot, reproduce the crash, and retry step 1.

Please take care to avoid attaching .crash files to bugs as we are unable to process them as file attachments. It would also be a security risk for yourself.

[Daniel van Vugt (vanvugt)]

Possibly related:

Your kernel log is showing a recurring hardware problem:

[ 4830.185697] pcieport 0000:00:1c.5: AER: Corrected error received: 0000:00:1c.5
[ 4830.185714] pcieport 0000:00:1c.5: AER: PCIe Bus Error: severity=Corrected, type=Physical Layer, (Receiver ID)
[ 4830.185722] pcieport 0000:00:1c.5: AER: device [8086:9d15] error status/mask=00000001/00002000
[ 4830.185727] pcieport 0000:00:1c.5: AER: [ 0] RxErr

which is this device:

00:1c.5 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #6 [8086:9d15] (rev f1) (prog-if 00 [Normal decode])

which may be related to a faulty or badly installed PCIe card (wifi etc).

Regardless, please follow the instructions in comment #2.

[Paramjeet Dhiman (paramjeetdhiman)]

After updating my ubuntu last week my computer gets freeze after some time and then showing this below error continuously...

EXT-fs error (device nvme0n1p6): __extf4_find_entry:1531 inode #6439215: comm main: reading
directory Iblock 0

https://errors.ubuntu.com/user/b6b2debb011c22cafae7187e930b22521e8059ec374323d39925592b77bd81b172a3da5cf5bd01d468258bfef39d1f6f13575df0bf6711b73d0990e20683bd48

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1889008

[Launchpad Janitor (janitor)]

[Expired for gnome-shell (Ubuntu) because there has been no activity for 60 days.]