Colour banding in HP Pavilion 15-n233sl integrated display

Bug #1794387 reported by Mattia Orlandi on 2018-09-25
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Medium
Unassigned
Cosmic
Medium
Unassigned

Bug Description

Colour bandind is visible everywhere in the system, and it appeared after I had my integrated monitor replaced. I believe it's not a hardware problem, since booting with 'nomodeset' works as expected.

There were already two similar bugs, https://bugs.launchpad.net/bugs/1749420 and https://bugs.launchpad.net/bugs/1788308, but the fixes provided for those bugs did not work for my specific monitor.

I'm running Ubuntu 18.04 with kernel linux-image-4.15.0-34-generic, installing linux-image-4.18.8 with UKUU didn't help.

I attached the results of running
sudo get-edid | parse-edid in a file named edid.txt
sudo get-edid | edid-decode in a file named edid-decoded.txt
cat /proc/version_signature in version.log
sudo lspci -vnvn in lspci-vnvn.log.
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: matt 1796 F.... pulseaudio
 /dev/snd/controlC1: matt 1796 F.... pulseaudio
CurrentDesktop: KDE
DistroRelease: KDE neon 18.04
InstallationDate: Installed on 2018-09-27 (0 days ago)
InstallationMedia: neon devunstable "Bionic" - Build amd64 LIVE Binary 20180924-13:08
Lsusb:
 Bus 001 Device 002: ID 8087:8000 Intel Corp.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 002 Device 002: ID 04f2:b40e Chicony Electronics Co., Ltd HP Truevision HD camera
 Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Hewlett-Packard HP Pavilion 15 Notebook PC
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-34-generic root=UUID=c3f61207-d13e-474b-a499-98030ddef8e1 ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 4.15.0-34.37-generic 4.15.18
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-34-generic N/A
 linux-backports-modules-4.15.0-34-generic N/A
 linux-firmware 1.173.1
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
Tags: bionic
Uname: Linux 4.15.0-34-generic x86_64
UnreportableReason: Questa segnalazione riguarda un pacchetto che non è installato.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sudo
_MarkForUpload: False
dmi.bios.date: 03/13/2017
dmi.bios.vendor: Insyde
dmi.bios.version: F.71
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 2166
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 29.42
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsyde:bvrF.71:bd03/13/2017:svnHewlett-Packard:pnHPPavilion15NotebookPC:pvr098B110000404100000620180:rvnHewlett-Packard:rn2166:rvr29.42:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV G=N L=CON B=HP S=PAV X=Null
dmi.product.name: HP Pavilion 15 Notebook PC
dmi.product.version: 098B110000404100000620180
dmi.sys.vendor: Hewlett-Packard

Mattia Orlandi (void97) wrote :
Mattia Orlandi (void97) wrote :
Mattia Orlandi (void97) wrote :
Mattia Orlandi (void97) wrote :

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1794387

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Changed in linux (Ubuntu):
status: New → Incomplete
Joseph Salisbury (jsalisbury) wrote :

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.19 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/v4.19-rc5

Changed in linux (Ubuntu):
importance: Undecided → Medium

apport information

tags: added: apport-collected
description: updated

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Mattia Orlandi (void97) wrote :

I installed kernel v4.19-rc5, but the system hangs due to an "ACPI BIOS Error".
Should I try rc4?

Thanks in advance.

Mattia Orlandi (void97) wrote :

Using the kernel provided by Kai-Heng Feng solves the issue, now colour banding is gone.
Thank you very much!

Mattia Orlandi (void97) on 2018-10-02
Changed in linux (Ubuntu):
status: Incomplete → Confirmed
Stefan Bader (smb) on 2019-01-14
Changed in linux (Ubuntu Cosmic):
importance: Undecided → Medium
status: New → Fix Committed
Brad Figg (brad-figg) wrote :

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-cosmic' to 'verification-done-cosmic'. If the problem still exists, change the tag 'verification-needed-cosmic' to 'verification-failed-cosmic'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

tags: added: verification-needed-cosmic
Mattia Orlandi (void97) wrote :

Using kernel 4.18.0-14-generic from cosmic-proposed fixes the issue. Thanks!

tags: added: verification-done-cosmic
removed: verification-needed-cosmic
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