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#1 2015-04-07 01:13:12
- ashrj
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- Registered: 2015-04-04
- Posts: 5
How does power management work under Arch?
So, my Arch install doesn't have Suspend to RAM working. While trying to fix it, I was trying to understand the application chain that deals with power events such as lid close. I have read
https://wiki.archlinux.org/index.php/Acpid
https://wiki.archlinux.org/index.php/Laptop_Mode_Tools
https://wiki.archlinux.org/index.php/Po … CPI_events
Now, I have XFCE4 with its default power manager installed. I'm quite confused as to what it is that I need along with that to get things to work.
In short, which of the following configurations is *correct*, in the sense that it will work without manual configuration out of the box, or with minimal configuration, and has a graphical front-end controllable from XFCE?
- xfce4-power-manager
- systemd -> xfce4-power-manager
- systemd -> acpid
- systemd -> acpid -> xfce4-power-manager
Also, if I want to use laptop-tools, then does this change?
Lastly, how do I diagnose the suspend to RAM issue? How do I check whether suspend or resume from suspend is failing?
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#2 2015-04-07 02:15:45
- thiagowfx
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- Registered: 2013-07-09
- Posts: 586
Re: How does power management work under Arch?
So, my Arch install doesn't have Suspend to RAM working.
Just to be sure: a manual 'systemctl suspend' doesn't work? Not talking about (automatic) power management for now. I just wanted to make sure first if manual suspension is working.
Last edited by thiagowfx (2015-04-07 02:16:13)
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#3 2015-04-07 02:29:10
- ashrj
- Member
- Registered: 2015-04-04
- Posts: 5
Re: How does power management work under Arch?
No. Same behavior with that command as is with xfce4-power-manager suspend.
Screen turns off, and system becomes unresponsive. No LEDS change/flicker. Trying to blindly issue a command after switching to tty2 has no effect either, so it is freezing. Interestingly, the CPU fan goes crazy. Starts running at high speed/full, irrespective of previous state.
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#4 2015-04-13 23:00:05
- chap
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- Registered: 2013-07-08
- Posts: 11
Re: How does power management work under Arch?
No. Same behavior with that command as is with xfce4-power-manager suspend.
Screen turns off, and system becomes unresponsive. No LEDS change/flicker. Trying to blindly issue a command after switching to tty2 has no effect either, so it is freezing. Interestingly, the CPU fan goes crazy. Starts running at high speed/full, irrespective of previous state.
Have you tried to switch to linux-lts?
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#5 2015-04-16 14:06:08
- ubone
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- Registered: 2014-08-31
- Posts: 47
Re: How does power management work under Arch?
So, my Arch install doesn't have Suspend to RAM working. While trying to fix it, I was trying to understand the application chain that deals with power events such as lid close. I have read
...
Lastly, how do I diagnose the suspend to RAM issue? How do I check whether suspend or resume from suspend is failing?
If you are using Xfce you don't need acpid and instead of laptop-tools try TLP which enabled successful suspend to ram on an older laptop I had, with Xfce on it.
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