Linux Mint LMDE Network Connections not opening

[screenshot]

i had a problem where the NetworkManager Applet icon from the right-bottom was missing(i wanted to connect to a wireless network) and the Network Connections panel aka nm-connection-editor simply did not open... (only flashed once). When i typed the same command into terminal, it gave somekind of font errors... ? the only way i was able to fix it, was that i changed the theme and restarted the laptop...

i tried lots of commands like "ifconfig wlan0 up", "sudo service network-manager restart", etc, but nothing helped...
is this "true" by default or it doesnt matter? (it was false for me, so i changed it to true, but that also didnt change anything):

Code: Select all

sudo nano /etc/NetworkManager/NetworkManager.conf

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=true

at the moment it still gives similar error, but atleast wifi now works:

Code: Select all

Fontconfig warning: "/etc/fonts/conf.d/65-droid-sans-fonts.conf", line 103: Having multiple values in <test> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/65-droid-sans-fonts.conf", line 138: Having multiple values in <test> isn't supported and may not work as expected

the problem perhaps started when i was trying to get the hibernation to work while using a wired connection, so i just disabled wireless from that right-bottom menu...
and the hibernation also hangs up in the loading screen most of the times... wonder how to get that working? (i used the method where i entered some UID somewhere...)

[Monsta]

the only way i was able to fix it, was that i changed the theme and restarted the laptop...

Known bug related to Unico. Don't use the theme that caused crashes and uninstall gtk3-engines-unico.

is this "true" by default or it doesnt matter? (it was false for me, so i changed it to true, but that also didnt change anything):

Code: Select all

sudo nano /etc/NetworkManager/NetworkManager.conf

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=true

Change it back to how it was and leave it alone, for one should not fix what's not broken.

at the moment it still gives similar error, but atleast wifi now works:

Code: Select all

Fontconfig warning: "/etc/fonts/conf.d/65-droid-sans-fonts.conf", line 103: Having multiple values in <test> isn't supported and may not work as expected
Fontconfig warning: "/etc/fonts/conf.d/65-droid-sans-fonts.conf", line 138: Having multiple values in <test> isn't supported and may not work as expected

This is unrelated.

the problem perhaps started when i was trying to get the hibernation to work while using a wired connection, so i just disabled wireless from that right-bottom menu...

If the problem has been fixed by changing the theme, then it has been started by changing the theme.

and the hibernation also hangs up in the loading screen most of the times... wonder how to get that working? (i used the method where i entered some UID somewhere...)

Different problems should go in different threads.

[screenshot]

i havent changed any themes before, only now when i had this problem (i saw the font error, so i thought that other theme might have a different font)

the only thing i did, was that i turned wifi off, plugged the ethernet cable in and followed all this in the first post:
http://forums.linuxmint.com/viewtopic.p ... te#p557205

altho i might be running lmde mate desktop... where to check that ?

edit* i guess this worked: "lsb_release -a"
is the latest lmde mate based on debian 6 or 7 tho?

[kurotsugi]

LMDE is based on debian testing (at this moment it's jessie - debian 8 in the future)
as for your problem, please try to run 'nm-applet' in your terminal. it will give us a hint what happened with nm-applet. the font error message is only a warning and should not kill nm-applet.

[screenshot]

ok thx. but the nm-applet now works and opens a new one until i press ctrl+x

[kurotsugi]

glad to hear that. it means your problem is solved

[screenshot]

well yes, but i cant really call it solved because i dont even know what caused it...

[kurotsugi]

that's normal. in my experience nm-applet sometimes behave like in your description and sometimes it run just fine. I think that's a bug from nm-applet. I never have a time to fully figure it out.