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Message #08777
[Bug 2127046] Re: GSK_RENDERER=vulkan wakes dGPU up on first app launch.
# System Details Report
---
## Report details
- **Date generated:** 2025-10-08 10:20:46
## Hardware Information:
- **Hardware Model:** Dell Inc. Dell G15 5520
- **Memory:** 16.0 GiB
- **Processor:** 12th Gen Intel® Core™ i7-12700H × 20
- **Graphics:** Intel® Iris® Xe Graphics (ADL GT2)
- **Graphics 1:** NVIDIA GeForce RTX™ 3050 Ti Laptop GPU
- **Disk Capacity:** 512.1 GB
## Software Information:
- **Firmware Version:** 1.35.0
- **OS Name:** Ubuntu 25.10
- **OS Build:** (null)
- **OS Type:** 64-bit
- **GNOME Version:** 49
- **Windowing System:** Wayland
- **Kernel Version:** Linux 6.17.0-5-generic
** Package changed: gnome-session (Ubuntu) => ubuntu
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https://bugs.launchpad.net/bugs/2127046
Title:
GSK_RENDERER=vulkan wakes dGPU up on first app launch.
Status in Ubuntu:
New
Bug description:
I needed to set `GSK_RENDERER=gl` in `/etc/environment` to reduce the
latency when launching GTK4 apps for the first time. Otherwise, the
dGPU is woken up which takes around 1-3 seconds for the app to launch.
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: gnome-session (not installed)
ProcVersionSignature: Ubuntu 6.17.0-5.5-generic 6.17.0-rc7
Uname: Linux 6.17.0-5-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Oct 8 10:12:44 2025
InstallationDate: Installed on 2025-09-27 (10 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64 (20250805.1)
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
XDG_RUNTIME_DIR=<set>
SourcePackage: gnome-session
UpgradeStatus: Upgraded to questing on 2025-10-07 (1 days ago)
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References