Hardware: HP EliteBook Revolve 810 G1 with Ubuntu Linux - problems

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

Touch Screen

After boot-up touch screen is working fine, but is generating only "left click" of mouse. This is limiting usage. After some time of usage only "mouse movement" events are generated. Same problem I saw also on Nexus 7 running Ubuntu Desktop. Looks like driver problem, but till now i don't have enough time to debug.

I recently updated to 13.10. version of Ubuntu. I had time to debug problem with touch panel but while I was trying to do so I realized that is is gone. I was drawing picture in gimp for several hours and it was working fine. Multi-touch is still not supported but this is limitation of X11 system (it was designed for PC with KB/Mouse input).

Graphics

HW acceleration is working fine. Resolution change, monitor select, etc. is working also fine, but i saw few times artifacts on screen. Looks like GPU is restarting itself at certain moment which cause artifacts to pop up for very short moment. Occurrence is very rare and this is not causing problems.

I am currently running 14.04.01 LTS and it looks like this problem is gone.

Wireless

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.

Power save can be disabled by powertop application or by connecting notebook to AC. Alternatively you can use:

sudo iwconfig wlan0 power off

WWAN

Modem is detected by Linux kernel properly and also by Network Manager within Ubuntu. Ubuntu is reporting signal strength correctly but attempt to connect to internet will fail. Looks like modem don't like way how Ubuntu initialize it and as result it reset itself.

Special initialization sequence is necessary prior to connection using network manager.

I am currently running 14.04.01 LTS and it looks like this problem is gone.

GPS

Till now I don't have time/need to test GPS. I may check this during summer ...