Two issues with Debian XFCE install on Thinkpadt420

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Two issues with Debian XFCE install on Thinkpadt420

Postby Nicholas727 » 2018-05-05 00:21

Hi all, I'm new to the forums and to Linux and have two issues with Debian 9.4 Stretch XFCE installed on my Thinkpad T420. I use a dock which seems to cause issues.

External screen
When I dock my T420 I would like the laptop screen to turn off and to use the external screen only. This was the default set up under Ubuntu. The problem I have is that it turns the laptop screen on by default and forces me to log in via the laptop screen. As a result, if I dock it with the laptop shut I simply can't use it as I need to log in with the laptop then manually change my screen settings to use the external screen only.

Is there some way I can configure Debian to automatically use the external screen only when docked?

Networking issues
My t420 when undocked uses a Wifi connection. When it is docked it uses Ethernet. I would like it to automatically swap to ethernet when docked, it doesn't at the moment. The other issue I have is that when it suspends and I resume the system the internet stops working. I have to disconnect the Wifi/Ethernet connection then reconnect for it to start working again. Sometimes it randomly swaps from Wifi to Ethernet and vice versa, which also causes it to stop working. These issues are hard to describe but very annoying.

Any help I can be given would be much appreciated! I'm loving Debian other than these two problems I'm having.
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Re: Two issues with Debian XFCE install on Thinkpadt420

Postby Nicholas727 » 2018-05-05 00:59

Another question I had is that each time the computer suspends I need to enter my full username and password. Can it be configured so that I only need to enter my password?
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Re: Two issues with Debian XFCE install on Thinkpadt420

Postby None1975 » 2018-05-05 12:01

Nicholas727 wrote: Can it be configured so that I only need to enter my password?

Yes. By default, LightDM is configured so that the user should enter login name and password. Login name is considered sensitive information. It is possible to provide the user with selection of available user accounts. The most recently used login name will be selected in the list. The user still has to enter password to login. This provides useful compromise between security and convenience for a single-user desktop system.
To enable user list, place the following settings into /usr/share/lightdm/lightdm.conf.d/01_my.conf:
Code: Select all
[Seat:*]
greeter-hide-users=false


Source
OS: Debian 9.4 / WM: Xmonad
Debian Wiki | DontBreakDebian, My config files in github
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Re: Two issues with Debian XFCE install on Thinkpadt420

Postby Nicholas727 » 2018-05-07 00:39

None1975 wrote:
Nicholas727 wrote: Can it be configured so that I only need to enter my password?

Yes. By default, LightDM is configured so that the user should enter login name and password. Login name is considered sensitive information. It is possible to provide the user with selection of available user accounts. The most recently used login name will be selected in the list. The user still has to enter password to login. This provides useful compromise between security and convenience for a single-user desktop system.
To enable user list, place the following settings into /usr/share/lightdm/lightdm.conf.d/01_my.conf:
Code: Select all
[Seat:*]
greeter-hide-users=false


Source


Thanks for the help! That worked. Do you have any ideas on the other two issues I am experiencing?
Nicholas727
 
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Re: Two issues with Debian XFCE install on Thinkpadt420

Postby None1975 » 2018-05-07 13:55

Nicholas727 wrote:Thanks for the help! That worked. Do you have any ideas on the other two issues I am experiencing?

You are welcome. Forgive me, because of your other troubles, I can not help anything, because i don’t use external screens and i don’t use wifi.
OS: Debian 9.4 / WM: Xmonad
Debian Wiki | DontBreakDebian, My config files in github
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Re: Two issues with Debian XFCE install on Thinkpadt420

Postby debiman » 2018-05-07 17:54

both issues are related to the dock you're using.
i ahve never used sth like that, but i remember that it required some fiddling to get it to work.
i suggest you start forming search phrases to help you find what you need, maybe:
"linux thinkpad dock external screen"
or
"debian laptop dock switch network interface"
etc.
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Re: Two issues with Debian XFCE install on Thinkpadt420

Postby Nicholas727 » 2018-05-19 04:26

For anyone who comes across the thread, I solved the issue by uninstalling XFCE and installing GNOME. GNOME configures the screen as I when I dock/undock the laptop. It also uses the ethernet while docked and automatically reverts to the WIFI when undocked by default, as I wanted. I think if you are using a docking system then you are better off with a more fully featured DE.
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