Internal laptop display defaults to low refresh rate
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Triaged
|
Medium
|
Unassigned | ||
Bionic |
Triaged
|
Medium
|
Unassigned | ||
Cosmic |
Triaged
|
Medium
|
Unassigned |
Bug Description
It appears that ever since kernel ~4.14, there was a bug in i915 DRM that caused the internal laptop displays connected by eDP to default to 40 Hz screen refresh rate.
Affected Ubuntu release: 18.04
Kernel package version: 4.15.0-22.24
What you expected to happen: The refresh rate has a sane default setting
What happened instead: The refresh rate defaults to 40 Hz
Upstream bug report: https:/
This has already been fixed in drm-tip: https:/
I do confirm that the latest daily build cod/tip/
Known workarounds: The user can force the display to use other refresh rates close to 60 Hz (59,96 works quite well in my case)
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-
Uname: Linux 4.17.0-994-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Jun 3 16:53:20 2018
InstallationDate: Installed on 2018-06-03 (0 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
TERM=xterm-
PATH=(custom, no user)
XDG_RUNTIME_
LANG=pl_PL.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed
UpgradeStatus: No upgrade log present (probably fresh install)
affects: | linux-signed (Ubuntu) → linux (Ubuntu) |
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
status: | New → Incomplete |
status: | Incomplete → Triaged |
no longer affects: | linux (Ubuntu Artful) |
Changed in linux (Ubuntu Bionic): | |
status: | New → Triaged |
importance: | Undecided → Medium |