Issues with Ubuntu 16.04.2 with kernel 4.8

giuliocoluccia · 02-28-2017, 07:57 AM

I'vre tried your workaround but id did not work. But I may have done something wrong. Here's what I did. I edited the file /usr/share/doc/xserver-xorg-video-intel-hwe-16.04/xorg.conf which looked like this:

Code:

Section "Device"
	Identifier "Intel"
	Driver "intel"
#	Option "AccelMethod" "uxa"
EndSection

and I replaced it with your code. But maybe Card0 and the bus address are not correct on my machine, or I've edited the wrong file. Can you help me with that?
Thank you

jerrinot · 02-28-2017, 09:45 AM

I actually used `# Xorg :1 -configure` to generate a config file. Strangely enough it did generate a config file with the intel driver not the the modesetting driver. Then I just copied this file into /etc/X11/xorg.conf

It's using the old(?) config style where all options are in a single file, so perhaps it's not very future-proof and it might break with another update. For a reference, here is the generated file.

DesertF0x · 03-01-2017, 03:39 PM

I am getting around the slow graphics when I am turning on the Laptop display additionally. But I always have to reconnect the dock after X started. Things were working with 4.4 and older driver.

hackedieter · 03-05-2017, 02:33 PM

Same:
Thinkpad T430u (intel graphics - modesetting)
Thinkpad Dock USB3.0 Basic (latest drivers)
Ubuntu 16.04.02 - 4.4.0-65-generic #86-Ubuntu

Mouse movement is smooth, but keyboard input lags (on external displaylink screen).

Strangest behaviour I see, when I let the e.g. chrome window overlap just some pixels into the laptop screen, the lag (while typing into the addressbar) is not there, or at least less. If I pull the window completely on the external (displaylink) screen, it lags like 1hz.

zielq701 · 03-14-2017, 07:58 PM

For me with ubuntu 16.04.2 it doesn't work too. It worked with 16.04.1

giuliocoluccia · 03-16-2017, 08:07 AM

Can somebody @DisplayLink like mlukaszek tell us if anybody is taking care of this issue? Because it seems impossible, or at least I don't know how, to rollback to the stable situation. Thanks a lot.

giuliocoluccia · 03-30-2017, 08:02 AM

It seems that the workaround described here http://displaylink.org/forum/showpos...98&postcount=1 attenuates the issue. Currently I've connected the external monitor and it seems to work, even if it is not super smooth. Even if the "hot swap" connection of the monitor makes the session crash and disconnect, coming back to the greeter page.

02-28-2017, 07:57 AM	#1
giuliocoluccia Junior Member Join Date: Dec 2015 Posts: 21	I'vre tried your workaround but id did not work. But I may have done something wrong. Here's what I did. I edited the file /usr/share/doc/xserver-xorg-video-intel-hwe-16.04/xorg.conf which looked like this: Code: Section "Device" Identifier "Intel" Driver "intel" # Option "AccelMethod" "uxa" EndSection and I replaced it with your code. But maybe Card0 and the bus address are not correct on my machine, or I've edited the wrong file. Can you help me with that? Thank you

02-28-2017, 09:45 AM	#2
jerrinot Junior Member Join Date: Feb 2017 Posts: 3	xorg.conf I actually used `# Xorg :1 -configure` to generate a config file. Strangely enough it did generate a config file with the intel driver not the the modesetting driver. Then I just copied this file into /etc/X11/xorg.conf It's using the old(?) config style where all options are in a single file, so perhaps it's not very future-proof and it might break with another update. For a reference, here is the generated file.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

03-01-2017, 03:39 PM	#3
DesertF0x Junior Member Join Date: Feb 2017 Posts: 2	I am getting around the slow graphics when I am turning on the Laptop display additionally. But I always have to reconnect the dock after X started. Things were working with 4.4 and older driver.

03-05-2017, 02:33 PM	#4
hackedieter Junior Member Join Date: Mar 2017 Posts: 1	Same: Thinkpad T430u (intel graphics - modesetting) Thinkpad Dock USB3.0 Basic (latest drivers) Ubuntu 16.04.02 - 4.4.0-65-generic #86-Ubuntu Mouse movement is smooth, but keyboard input lags (on external displaylink screen). Strangest behaviour I see, when I let the e.g. chrome window overlap just some pixels into the laptop screen, the lag (while typing into the addressbar) is not there, or at least less. If I pull the window completely on the external (displaylink) screen, it lags like 1hz.

03-14-2017, 07:58 PM	#5
zielq701 Junior Member Join Date: Mar 2017 Posts: 1	For me with ubuntu 16.04.2 it doesn't work too. It worked with 16.04.1

03-16-2017, 08:07 AM	#6
giuliocoluccia Junior Member Join Date: Dec 2015 Posts: 21	Can somebody @DisplayLink like mlukaszek tell us if anybody is taking care of this issue? Because it seems impossible, or at least I don't know how, to rollback to the stable situation. Thanks a lot.

03-30-2017, 08:02 AM	#7
giuliocoluccia Junior Member Join Date: Dec 2015 Posts: 21	It seems that the workaround described here http://displaylink.org/forum/showpos...98&postcount=1 attenuates the issue. Currently I've connected the external monitor and it seems to work, even if it is not super smooth. Even if the "hot swap" connection of the monitor makes the session crash and disconnect, coming back to the greeter page.