| 2018-02-14 10:44:50 |
Øystein Steffensen-Alværvik |
bug |
|
|
added bug |
| 2018-02-14 10:46:14 |
Øystein Steffensen-Alværvik |
bug |
|
|
added subscriber Daniel van Vugt |
| 2018-02-14 11:00:08 |
Ubuntu Kernel Bot |
linux (Ubuntu): status |
New |
Confirmed |
|
| 2018-02-14 19:42:52 |
Joseph Salisbury |
linux (Ubuntu): importance |
Undecided |
Medium |
|
| 2018-02-14 19:43:03 |
Joseph Salisbury |
tags |
amd64 apport-bug bionic |
amd64 apport-bug bionic needs-bisect |
|
| 2018-02-14 19:44:16 |
Joseph Salisbury |
linux (Ubuntu): status |
Confirmed |
Incomplete |
|
| 2018-02-15 02:33:38 |
Daniel van Vugt |
summary |
Colour banding and artefacts appear system-wide on an Intel HD Graphics 4400 system |
Colour banding and artefacts appear system-wide on an Asus Zenbook UX303 with Intel HD 4400 graphics |
|
| 2018-02-15 04:06:43 |
Daniel van Vugt |
summary |
Colour banding and artefacts appear system-wide on an Asus Zenbook UX303 with Intel HD 4400 graphics |
Colour banding and artefacts appear system-wide on an Asus Zenbook UX303LA with Intel HD 4400 graphics |
|
| 2018-02-15 05:15:18 |
Daniel van Vugt |
tags |
amd64 apport-bug bionic needs-bisect |
amd64 apport-bug bionic needs-bisect visual-quality |
|
| 2018-02-15 06:55:34 |
Daniel van Vugt |
linux (Ubuntu): status |
Incomplete |
New |
|
| 2018-02-15 07:00:08 |
Ubuntu Kernel Bot |
linux (Ubuntu): status |
New |
Confirmed |
|
| 2018-02-16 02:39:15 |
Daniel van Vugt |
attachment added |
|
i915_changes_v4.7-v4.8.diff.gz https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1749420/+attachment/5056341/+files/i915_changes_v4.7-v4.8.diff.gz |
|
| 2018-02-16 02:44:35 |
Daniel van Vugt |
linux (Ubuntu): status |
Confirmed |
Incomplete |
|
| 2018-02-16 03:15:56 |
Daniel van Vugt |
summary |
Colour banding and artefacts appear system-wide on an Asus Zenbook UX303LA with Intel HD 4400 graphics |
[regression] Colour banding and artefacts appear system-wide on an Asus Zenbook UX303LA with Intel HD 4400 graphics |
|
| 2018-02-16 10:58:49 |
Øystein Steffensen-Alværvik |
attachment added |
|
Output of sudo get-edid | parse-edid > edid.txt https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1749420/+attachment/5056593/+files/edid.txt |
|
| 2018-02-16 10:59:26 |
Øystein Steffensen-Alværvik |
attachment added |
|
edid-decoded.txt https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1749420/+attachment/5056594/+files/edid-decoded.txt |
|
| 2018-02-17 09:28:11 |
Øystein Steffensen-Alværvik |
attachment added |
|
dmesg https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1749420/+attachment/5057066/+files/dmesg |
|
| 2018-02-20 06:32:27 |
Daniel van Vugt |
linux (Ubuntu): status |
Incomplete |
New |
|
| 2018-02-20 07:00:10 |
Ubuntu Kernel Bot |
linux (Ubuntu): status |
New |
Confirmed |
|
| 2018-02-20 13:07:11 |
Kai-Heng Feng |
linux (Ubuntu): assignee |
|
Kai-Heng Feng (kaihengfeng) |
|
| 2018-02-20 17:44:46 |
amano |
bug |
|
|
added subscriber amano |
| 2018-02-28 14:45:33 |
Thadeu Lima de Souza Cascardo |
nominated for series |
|
Ubuntu Bionic |
|
| 2018-03-01 06:31:56 |
Kai-Heng Feng |
description |
- Ubuntu 18.04 (with updates as of 14 Feb 2018).
- Laptop: Asus Zenbook UX303
- CPU: Intel i5 4210U
- Graphics: Intel HD 4400
Problem description: Colour artefacts and banding in all apps. Graphics, photos and videos display as though the colour range is improperly configured.
See this photo of a 1080p video taken with a camera (poor quality, but illustrates the issue): https://ubuntucommunity.s3-us-east-2.amazonaws.com/original/2X/c/c8f266715226953c6a77db6367ff9b7895784e35.jpg
Look at the sky’s light colours. They display with smooth gradients on Ubuntu 16.04, but as the photo illustrates 18.04 seems to display the video with a smaller range of white colours. This is the most apparent with either very dark or very light colours. Even on window titlebars the banding is visible (displayed as lines with different shades of grey/black).
Compared with a PrtSc shot of the same image:
https://i.imgur.com/VkOSCaQ.png
The artefacts are not present on PrtSc shots that are taken on Ubuntu 18.04 but viewed on a different system (16.04 and Windows).
Installing a previous kernel version fixes the issue completely. I used UKUU Update Utility to install kernel 4.4 (the same that I use in Ubuntu 16.04 without issues) and upon a reboot with 4.4 running on 18.04 everything displayed smoothly. So this indicates that the system might be using a sub-optimal colour depth with the newer kernel?
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.13.0-32-generic 4.13.0-32.35 [modified: boot/vmlinuz-4.13.0-32-generic]
ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ystein 1344 F.... pulseaudio
/dev/snd/controlC1: ystein 1344 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Wed Feb 14 11:25:43 2018
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=d0bae648-a4d8-454c-b9fc-4cc04874d6c1
InstallationDate: Installed on 2018-02-12 (1 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180210)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:07dc Intel Corp.
Bus 001 Device 003: ID 064e:9700 Suyin Corp. Asus Integrated Webcam
Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. UX303LA
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-32-generic.efi.signed root=UUID=25279d7b-cc8a-4fee-9088-cfc69607cbca ro quiet splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.13.0-32-generic N/A
linux-backports-modules-4.13.0-32-generic N/A
linux-firmware 1.170
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/01/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX303LA.204
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX303LA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX303LA.204:bd09/01/2014:svnASUSTeKCOMPUTERINC.:pnUX303LA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX303LA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: UX
dmi.product.name: UX303LA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC. |
=== SRU Justification ===
[Impact]
Color dithering not working correctly because the graphics driver
assumes the panel support 8bpc, but the panel only supports 6bpc.
[Test]
User reports the issue start appearing from v4.8-rc2.
The issue is fixed with the patch.
[Fix]
Add a quirk to tell DRM that this panel only supports 6bpc.
[Regression Potential]
Low. This fix matches a very specific panel.
=== Original Bug Report ===
- Ubuntu 18.04 (with updates as of 14 Feb 2018).
- Laptop: Asus Zenbook UX303
- CPU: Intel i5 4210U
- Graphics: Intel HD 4400
Problem description: Colour artefacts and banding in all apps. Graphics, photos and videos display as though the colour range is improperly configured.
See this photo of a 1080p video taken with a camera (poor quality, but illustrates the issue): https://ubuntucommunity.s3-us-east-2.amazonaws.com/original/2X/c/c8f266715226953c6a77db6367ff9b7895784e35.jpg
Look at the sky’s light colours. They display with smooth gradients on Ubuntu 16.04, but as the photo illustrates 18.04 seems to display the video with a smaller range of white colours. This is the most apparent with either very dark or very light colours. Even on window titlebars the banding is visible (displayed as lines with different shades of grey/black).
Compared with a PrtSc shot of the same image:
https://i.imgur.com/VkOSCaQ.png
The artefacts are not present on PrtSc shots that are taken on Ubuntu 18.04 but viewed on a different system (16.04 and Windows).
Installing a previous kernel version fixes the issue completely. I used UKUU Update Utility to install kernel 4.4 (the same that I use in Ubuntu 16.04 without issues) and upon a reboot with 4.4 running on 18.04 everything displayed smoothly. So this indicates that the system might be using a sub-optimal colour depth with the newer kernel?
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.13.0-32-generic 4.13.0-32.35 [modified: boot/vmlinuz-4.13.0-32-generic]
ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13
Uname: Linux 4.13.0-32-generic x86_64
ApportVersion: 2.20.8-0ubuntu10
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ystein 1344 F.... pulseaudio
/dev/snd/controlC1: ystein 1344 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Wed Feb 14 11:25:43 2018
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=d0bae648-a4d8-454c-b9fc-4cc04874d6c1
InstallationDate: Installed on 2018-02-12 (1 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180210)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:07dc Intel Corp.
Bus 001 Device 003: ID 064e:9700 Suyin Corp. Asus Integrated Webcam
Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: ASUSTeK COMPUTER INC. UX303LA
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-32-generic.efi.signed root=UUID=25279d7b-cc8a-4fee-9088-cfc69607cbca ro quiet splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.13.0-32-generic N/A
linux-backports-modules-4.13.0-32-generic N/A
linux-firmware 1.170
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/01/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX303LA.204
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UX303LA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX303LA.204:bd09/01/2014:svnASUSTeKCOMPUTERINC.:pnUX303LA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX303LA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: UX
dmi.product.name: UX303LA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC. |
|
| 2018-03-02 13:24:30 |
Kleber Sacilotto de Souza |
nominated for series |
|
Ubuntu Artful |
|
| 2018-03-02 13:24:30 |
Kleber Sacilotto de Souza |
bug task added |
|
linux (Ubuntu Artful) |
|
| 2018-03-02 13:24:36 |
Kleber Sacilotto de Souza |
linux (Ubuntu Artful): status |
New |
Fix Committed |
|
| 2018-03-02 13:36:56 |
Kleber Sacilotto de Souza |
bug task added |
|
linux (Ubuntu Bionic) |
|
| 2018-03-02 13:37:03 |
Kleber Sacilotto de Souza |
linux (Ubuntu Bionic): status |
Confirmed |
Fix Committed |
|
| 2018-03-15 02:26:24 |
Launchpad Janitor |
linux (Ubuntu Bionic): status |
Fix Committed |
Fix Released |
|
| 2018-03-15 02:26:24 |
Launchpad Janitor |
cve linked |
|
2017-5754 |
|
| 2018-03-19 10:57:57 |
Stefan Bader |
tags |
amd64 apport-bug bionic needs-bisect visual-quality |
amd64 apport-bug bionic needs-bisect verification-needed-artful visual-quality |
|
| 2018-03-23 19:07:44 |
Øystein Steffensen-Alværvik |
tags |
amd64 apport-bug bionic needs-bisect verification-needed-artful visual-quality |
amd64 apport-bug bionic needs-bisect verification-done-bionic verification-needed-artful visual-quality |
|
| 2018-04-03 07:09:34 |
Stefan Bader |
tags |
amd64 apport-bug bionic needs-bisect verification-done-bionic verification-needed-artful visual-quality |
amd64 apport-bug bionic needs-bisect verification-done-artful verification-done-bionic visual-quality |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
linux (Ubuntu Artful): status |
Fix Committed |
Fix Released |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2017-0861 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2017-1000407 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2017-15129 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2017-16994 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2017-17448 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2017-17450 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2017-17741 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2017-17805 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2017-17806 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2017-17807 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2018-1000026 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2018-5332 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2018-5333 |
|
| 2018-04-03 14:10:10 |
Launchpad Janitor |
cve linked |
|
2018-5344 |
|
| 2018-04-24 16:02:15 |
Stefan Bader |
nominated for series |
|
Ubuntu Xenial |
|
| 2018-04-24 16:02:15 |
Stefan Bader |
bug task added |
|
linux (Ubuntu Xenial) |
|
| 2018-04-24 16:02:53 |
Stefan Bader |
linux (Ubuntu Xenial): importance |
Undecided |
Medium |
|
| 2018-04-24 16:02:53 |
Stefan Bader |
linux (Ubuntu Xenial): status |
New |
Fix Committed |
|
| 2018-04-27 19:11:52 |
Brad Figg |
tags |
amd64 apport-bug bionic needs-bisect verification-done-artful verification-done-bionic visual-quality |
amd64 apport-bug bionic needs-bisect verification-done-artful verification-done-bionic verification-needed-xenial visual-quality |
|
| 2018-04-30 02:15:16 |
Daniel van Vugt |
bug task added |
|
linux-hwe (Ubuntu) |
|
| 2018-04-30 02:15:27 |
Daniel van Vugt |
linux (Ubuntu Xenial): status |
Fix Committed |
Invalid |
|
| 2018-04-30 02:15:35 |
Daniel van Vugt |
bug task deleted |
linux-hwe (Ubuntu Artful) |
|
|
| 2018-04-30 02:15:45 |
Daniel van Vugt |
bug task deleted |
linux-hwe (Ubuntu Bionic) |
|
|
| 2018-05-01 12:15:31 |
Øystein Steffensen-Alværvik |
linux-hwe (Ubuntu): status |
New |
Fix Committed |
|
| 2018-05-01 12:15:38 |
Øystein Steffensen-Alværvik |
linux-hwe (Ubuntu Xenial): status |
New |
Fix Committed |
|
| 2018-05-01 12:17:06 |
Øystein Steffensen-Alværvik |
tags |
amd64 apport-bug bionic needs-bisect verification-done-artful verification-done-bionic verification-needed-xenial visual-quality |
amd64 apport-bug bionic needs-bisect verification-done-artful verification-done-bionic verification-done-xenial visual-quality |
|
| 2018-05-22 00:00:38 |
Launchpad Janitor |
linux (Ubuntu Xenial): status |
Invalid |
Fix Released |
|
| 2018-05-22 00:00:38 |
Launchpad Janitor |
cve linked |
|
2017-16995 |
|
| 2018-05-22 00:00:38 |
Launchpad Janitor |
cve linked |
|
2017-17862 |
|
| 2018-05-22 00:00:38 |
Launchpad Janitor |
cve linked |
|
2018-1000004 |
|
| 2018-05-22 00:00:38 |
Launchpad Janitor |
cve linked |
|
2018-3639 |
|
| 2018-07-02 08:31:58 |
Launchpad Janitor |
linux-hwe (Ubuntu Xenial): status |
Fix Committed |
Fix Released |
|
| 2018-07-02 08:31:58 |
Launchpad Janitor |
cve linked |
|
2018-11508 |
|
| 2018-07-02 08:31:58 |
Launchpad Janitor |
cve linked |
|
2018-7755 |
|
| 2018-07-02 08:31:58 |
Launchpad Janitor |
linux-hwe (Ubuntu Xenial): status |
Fix Committed |
Fix Released |
|
| 2020-01-06 11:00:27 |
Po-Hsu Lin |
linux-hwe (Ubuntu): status |
Fix Committed |
Fix Released |
|
