Difference between revisions of "Hardware: HP EliteBook Revolve 810 G1 with Ubuntu Linux - problems"

From Luky-Wiki
Jump to: navigation, search
(→‎Wireless)
Line 2: Line 2:
  
 
== Wireless ==
 
== Wireless ==
−
<strike>
+
There is something wrong with WiFi scanning or network manager implementation. When I log in then device scan for networks and connect to my home WiFi. If there is need to do scanning again (for example when I move laptop to different place) then it looks like scanning is not invoked at all. GUI show stale entries and connection is not established. Workaround is:
−
For regular usage WiFi is working fine, but ... When notebook is running on battery power save is highly aggressive. For web browsing it is fine, but for interactive sessions (ssh, chat) it is causing visible delay. With power save active also maximal throughput is limited which can affect video on demand.
+
<pre>sudo iwlist wlan0 scanning | grep SSID</pre>
 +
Sometimes it is necessary to invoke this command twice. Then suddenly GUI found WiFi and connect to it.
  
−
Power save can be disabled by <code>powertop</code> application or by connecting notebook to AC. Alternatively you can use:
+
I think network manager is not invoking scanning properly but it will need more in depth investigation.
−
<pre>
+
 
−
sudo iwconfig wlan0 power off
+
Additionally from time to time network manager is not started at all. This can be fixed by:
−
</pre>
+
<pre>sudo service network-manager restart</pre>
−
</strike>
+
 
 +
This is again pointing to network manager. More in depth check needed.
  
 
=== USB ===
 
=== USB ===

Revision as of 20:46, 13 February 2016

This page describe problems observed with "HP EliteBook Revolve 810 G1" during regular usage or tests.

Wireless

There is something wrong with WiFi scanning or network manager implementation. When I log in then device scan for networks and connect to my home WiFi. If there is need to do scanning again (for example when I move laptop to different place) then it looks like scanning is not invoked at all. GUI show stale entries and connection is not established. Workaround is: 

sudo iwlist wlan0 scanning | grep SSID

Sometimes it is necessary to invoke this command twice. Then suddenly GUI found WiFi and connect to it.

I think network manager is not invoking scanning properly but it will need more in depth investigation.

Additionally from time to time network manager is not started at all. This can be fixed by: 

sudo service network-manager restart

This is again pointing to network manager. More in depth check needed.

USB

Retrieved from "https://lukas.dzunko.sk/index.php?title=Hardware:_HP_EliteBook_Revolve_810_G1_with_Ubuntu_Linux_-_problems&oldid=1628"