** Description changed:
Relying on the nouveau driver and on the vga switcheroo (to get around a
change in systemd LP: #1777099) caused increased power consumption, and
slowed down the switching process.
- Solving the problem in systemd (LP: #1777099), and adding code in gpu-
- manager
This bug was fixed in the package nvidia-prime - 0.8.9
---
nvidia-prime (0.8.9) cosmic; urgency=medium
[ Alberto Milone ]
* 90-nvidia.conf,
debian/rules,
prime-select:
- Make sure to remove the old blacklist file.
- Use /lib for blacklist-nvidia.conf.
- Do not
** Also affects: gdm3 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: gdm3 (Ubuntu)
Status: New => In Progress
** Changed in: gdm3 (Ubuntu)
Importance: Undecided => High
** Changed in: gdm3 (Ubuntu)
Assignee: (unassigned) => Alberto Milone (albertomilone)
**
** Merge proposal linked:
https://code.launchpad.net/~albertomilone/ubuntu/+source/gdm3/+git/gdm3/+merge/351810
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Title:
PRIME Power Saving
This bug also affects me.
I am running Kubuntu 18.04 on Gigabyte AERO14, CPU:i7-7700HQ (45W TDP),
GPU:Nvidia 1050Ti
I took a full system image with clonezilla, and tested Alberto Milone's
PPA. System working fine after the upgrade. I tested switch+reboot
around 20 times.
Test results:
No issue
@fargoth: you can disable gpu-manager by passing the "nogpumanager" boot
parameter. Wouldn't this work for you?
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Title:
PRIME Power Saving mode
Can we have an option to switch to the iGPU, but keep the nvidia card
powered and its modules loaded so that it can be used for CUDA
calculations?
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@André
1. Yes.
2. The new code doesn't involve using nouveau, or bbswitch, or
regenerating the initramfs.
3. I don't think Gdm3 allows stopping X, calling gpu-manager, and then
restarting X, as LightDm does on log out. I hope to do some work on it
in the future though.
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You received this
Hey, Alberto. I have a few questions:
1. Are these changes intended to be deployed to Bionic, eventually? (I
assume yes, by the names/versions you're working on, but I wanted to
confirm this)
2. Would it make it not necessary to switch to nouveau at all? (I assume
this is why prime-select
Here is a PPA with the current code for Bionic, available for testing:
https://launchpad.net/~albertomilone/+archive/ubuntu/hybridgraphics?field.series_filter=bionic
You will have to upgrade systemd, nvidia-prime, and ubuntu-drivers-
common, call "sudo update-initramfs -u" (just in case), and
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