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[Bug 1502613] Re: [Feature Request] Battery Status / Virtual Battery
From: |
Sergey Nizovtsev |
Subject: |
[Bug 1502613] Re: [Feature Request] Battery Status / Virtual Battery |
Date: |
Mon, 10 Feb 2020 23:22:21 -0000 |
I've started working on this issue and have some progress. Fedora 31
guest is already able to see a battery device but its state currently
hardcoded. I think i will finish this in a few weeks.
** Attachment added: "qemu-battery-poc.png"
https://bugs.launchpad.net/qemu/+bug/1502613/+attachment/5327136/+files/qemu-battery-poc.png
** Changed in: qemu
Assignee: (unassigned) => Sergey Nizovtsev (snizovtsev)
** Changed in: qemu
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1502613
Title:
[Feature Request] Battery Status / Virtual Battery
Status in QEMU:
In Progress
Bug description:
When using virtualization on notebooks heavily then virtual machines
do not realize that they're running on a notebook device causing high
power consumption because they're not switching into a optimized
"laptop mode". This leads to the circumstance that they are trying to
do things like defragmentation / virtus scan / etc. while the host is
still running on batteries.
So it would be great if QEMU / KVM would have support for emulating
"Virtual Batteries" to guests causing them to enable power-saving
options like disabling specific services / devices / file operations
automatically by OS.
Optionally a great feature would be to set virtual battery's status
manually. For example: Current charge rate / charging / discharging /
...
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