power settings not working

[kmchen]

kmc@kmcs:~$ apt policy upower powerdevil
upower:
Installed: 0.99.9-3
Candidate: 0.99.10-1
Version table:
0.99.10-1 100
100 http://httpredir.debian.org/debian sid/main amd64 Packages
*** 0.99.9-3 100
100 /var/lib/dpkg/status
0.99.4-4+b1 500
500 http://httpredir.debian.org/debian stretch/main amd64 Packages
powerdevil:
Installed: 4:5.8.4-1
Candidate: 4:5.8.4-1
Version table:
4:5.14.5-1 100
100 http://httpredir.debian.org/debian sid/main amd64 Packages
*** 4:5.8.4-1 500
500 http://httpredir.debian.org/debian stretch/main amd64 Packages
100 /var/lib/dpkg/status

[L_V]

The thread is a bit confusing.
Do you have both gnome and KDE installed ? Or KDE ?
Did you have a look in power settings of systemsettings5 ?
You mix Stretch and SID: compatibility problem ?

[kmchen]

Well It' a KDE install but lookin at the install is a bit confusing. Looks to be a buster but stretch sources.lists with sid preferences . I don't know what has been done on that laptop :

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kmc@kmcs:~$ cat /etc/issue
Debian GNU/Linux buster/sid \n \l

kmc@kmcs:~$ cat /etc/apt/sources.list
# 

# deb cdrom:[Debian GNU/Linux 8 _stretch_ - Official Snapshot amd64 LIVE/INSTALL Binary 20150908-22:00]/ stretch main                                                             
                                                                                         
deb http://httpredir.debian.org/debian/ stretch main contrib non-free                    
deb-src http://httpredir.debian.org/debian/ stretch main contrib non-free                
                                                                                         
deb http://security.debian.org/ stretch/updates main contrib non-free                    
deb-src http://security.debian.org/ stretch/updates main contrib non-free                
                                                                                         
# stretch-updates, previously known as 'volatile'                                        
deb http://httpredir.debian.org/debian/ stretch-updates main contrib non-free            
deb-src http://httpredir.debian.org/debian/ stretch-updates main contrib non-free        
                                                                                         
#backports                                                                               
deb http://httpredir.debian.org/debian stretch-backports main contrib non-free           
                                                                                         
#Unstable                                                                                
deb http://httpredir.debian.org/debian/ sid main contrib non-free

kmc@kmcs:~$ cat /etc/apt/preferences.d/testing
Package: *
Pin: release n=sid
Pin-Priority: 100

[L_V]

Does not look clean at all. And

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uname -a 

[kmchen]

Code: Select all

kmc@kmcs:~$ uname -a 
Linux kmcs 4.9.0-9-amd64 #1 SMP Debian 4.9.168-1 (2019-04-12) x86_64 GNU/Linux

For the power settings management I solved installing acpid that were not:

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sudo apt install acpid acpi-support-base acpi-support

[L_V]

You have a kernel form Stretch with a mixture of SID packages.

stretch => buster => bullseye => sid
You should think about clarifying what you want to avoid next surprise.

Do you mean that acpid was not necessary in Stretch, and now necessary with SID mixture ?