You are not logged in.

#1 2014-08-25 23:41:47

proglodyte
Member
Registered: 2014-08-25
Posts: 2

Thinkpad T440s cannot connect to displayport

Hi, I just installed arch on a Thinkpad T440s and I've managed to configure most things to my liking, but for some reason I cannot recognize displays plugged into the mini displayport. No matter what I have plugged in, the output of

$ xrandr -q

is always:

Screen 0: minimum 8 x 8, current 1600 x 900, maximum 32767 x 32767
eDP1 connected 1600x900+0+0 (normal left inverted right x axis y axis) 309mm x 174mm
   1600x900      60.01*+
   1024x768      60.00  
   800x600       60.32    56.25  
   640x480       59.94  
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

This also doesn't show the VGA port at all, which confuses me. I have the latest version of the xf86-video-intel driver installed. I also tried forcing output to DP1 with:

$ xrandr --addmode DP1 1600x900
$ xrandr --output DP1 --mode 1600x900

but this failed with output

xrandr: Configure crtc 1 failed

Any help would be greatly appreciated!

Offline

#2 2014-08-26 03:23:54

halocaridina
Member
From: US
Registered: 2014-07-21
Posts: 44

Re: Thinkpad T440s cannot connect to displayport

Hi proglodyte,

Hadn't tried the mini Displayport on my T440S since receiving the machine a few weeks back. Your email prompted me to give it a try via mini Diplayport -> HDMI adaptor (from a MacBook Pro). Writing this while connected to a Sony Bravia TV, so no problems getting it to work.

Output of:

xrandr -q
 Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
eDP1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 175mm
   1920x1080     60.01*+
   1400x1050     59.98  
   1280x1024     60.02  
   1280x960      60.00  
   1024x768      60.00  
   800x600       60.32    56.25  
   640x480       59.94  
DP1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 1600mm x 900mm
   1920x1080     60.00*+  59.94    24.00    23.98  
   1920x1080i    60.00    59.94  
   1280x1024     60.02  
   1280x720      60.00    59.94  
   1024x768      60.00  
   1440x480i     60.00    59.94    59.94  
   800x600       60.32  
   720x480       60.00    59.94  
   640x480       60.00    59.94  
DP2 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)

I had previous installed arandr and hotkeyed it to F7 in i3 for connecting via the mini Displayport and/or VGA and my Arch is up-to-date. Maybe try arandr to see if you come to the same result?

Hope this helps.


4X Intel(R) Xeon(R) CPU E7-8870 @ 2.40GHz; 256GiB; 11TB EXT4; SL6.7
2X Intel(R) Xeon(R) CPU E5-2680 @ 2.70GHz; 256GiB; 3.4TB EXT4; SL6.7
Latitude 3150; Pentium N3540; 8GiB, 256GB THNSNJ25; Arch
Thinkpad T440S; Haswell-ULT Core i7; 12GiB, 512GB X210; Arch

Offline

#3 2014-08-28 18:09:15

proglodyte
Member
Registered: 2014-08-25
Posts: 2

Re: Thinkpad T440s cannot connect to displayport

Thanks, but it's still not working for me. What does your /etc/mkinitcpio.conf look like? What about /etc/X11/xorg.conf? And what video drivers do you have installed (output of pacman -Qs intel)? Thanks again for your help.

Offline

#4 2014-08-29 03:18:12

halocaridina
Member
From: US
Registered: 2014-07-21
Posts: 44

Re: Thinkpad T440s cannot connect to displayport

Hi proglodyte,

Sorry to hear the mini Displayport is still problematic. Requested info is below, though its vanilla defaults (i.e., no xorg.conf). Hope its helpful anyway.

cat /etc/mkinitcpio.conf
# vim:set ft=sh
# MODULES
# The following modules are loaded before any boot hooks are
# run.  Advanced users may wish to specify all system modules
# in this array.  For instance:
#     MODULES="piix ide_disk reiserfs"
MODULES=""

# BINARIES
# This setting includes any additional binaries a given user may
# wish into the CPIO image.  This is run last, so it may be used to
# override the actual binaries included by a given hook
# BINARIES are dependency parsed, so you may safely ignore libraries
BINARIES=""

# FILES
# This setting is similar to BINARIES above, however, files are added
# as-is and are not parsed in any way.  This is useful for config files.
FILES=""

# HOOKS
# This is the most important setting in this file.  The HOOKS control the
# modules and scripts added to the image, and what happens at boot time.
# Order is important, and it is recommended that you do not change the
# order in which HOOKS are added.  Run 'mkinitcpio -H <hook name>' for
# help on a given hook.
# 'base' is _required_ unless you know precisely what you are doing.
# 'udev' is _required_ in order to automatically load modules
# 'filesystems' is _required_ unless you specify your fs modules in MODULES
# Examples:
##   This setup specifies all modules in the MODULES setting above.
##   No raid, lvm2, or encrypted root is needed.
#    HOOKS="base"
#
##   This setup will autodetect all modules for your system and should
##   work as a sane default
#    HOOKS="base udev autodetect block filesystems"
#
##   This setup will generate a 'full' image which supports most systems.
##   No autodetection is done.
#    HOOKS="base udev block filesystems"
#
##   This setup assembles a pata mdadm array with an encrypted root FS.
##   Note: See 'mkinitcpio -H mdadm' for more information on raid devices.
#    HOOKS="base udev block mdadm encrypt filesystems"
#
##   This setup loads an lvm2 volume group on a usb device.
#    HOOKS="base udev block lvm2 filesystems"
#
##   NOTE: If you have /usr on a separate partition, you MUST include the
#    usr, fsck and shutdown hooks.
HOOKS="base udev autodetect modconf block filesystems keyboard fsck"

# COMPRESSION
# Use this to compress the initramfs image. By default, gzip compression
# is used. Use 'cat' to create an uncompressed image.
#COMPRESSION="gzip"
#COMPRESSION="bzip2"
#COMPRESSION="lzma"
#COMPRESSION="xz"
#COMPRESSION="lzop"
#COMPRESSION="lz4"

# COMPRESSION_OPTIONS
# Additional options for the compressor
#COMPRESSION_OPTIONS=""
ls -R /etc/X11
/etc/X11/:
xinit  xorg.conf.d

/etc/X11/xinit:
xinitrc  xinitrc.d  xserverrc

/etc/X11/xinit/xinitrc.d:
30-dbus

/etc/X11/xorg.conf.d:
90-evdev-trackpoint.conf
pacman -Qs intel
local/intel-dri 10.2.6-1
    Mesa drivers for Intel
local/intel-ucode 20140624-1
    Microcode update files for Intel CPUs
local/libva-intel-driver 1.3.2-1
    VA-API implementation for Intel G45 and HD Graphics family
local/xf86-video-intel 2.99.914-4 (xorg-drivers xorg)
    X.org Intel i810/i830/i915/945G/G965+ video drivers

Other things to consider are a faulty mini Displayport adaptor (best case) or mini Displayport itself (worst case) on your T440S.


4X Intel(R) Xeon(R) CPU E7-8870 @ 2.40GHz; 256GiB; 11TB EXT4; SL6.7
2X Intel(R) Xeon(R) CPU E5-2680 @ 2.70GHz; 256GiB; 3.4TB EXT4; SL6.7
Latitude 3150; Pentium N3540; 8GiB, 256GB THNSNJ25; Arch
Thinkpad T440S; Haswell-ULT Core i7; 12GiB, 512GB X210; Arch

Offline

#5 2014-09-22 09:52:07

meccanus
Member
Registered: 2013-04-23
Posts: 10

Re: Thinkpad T440s cannot connect to displayport

I am experiencing a simlar problem.
I have the same list of packages installed.
My xrandr output lists the external monitor as connected, but no image is shown.
The monitor turns off with "no cable connected" message.
However, if I plug and unplug the cable, kde notices that a new monitor is being connected.
I even tryed changing refresh frequencies and lowering resolution but nothing happened.

Any hints?

Offline

#6 2014-09-22 16:05:43

Photor
Member
Registered: 2013-05-28
Posts: 9

Re: Thinkpad T440s cannot connect to displayport

halocaridina wrote:

Hi proglodyte,

Hadn't tried the mini Displayport on my T440S since receiving the machine a few weeks back. Your email prompted me to give it a try via mini Diplayport -> HDMI adaptor (from a MacBook Pro). Writing this while connected to a Sony Bravia TV, so no problems getting it to work.

Hi,

I canb support this: I have used the display port of my T440s with adaptor with several external displays (monitor with adaptor to DVI-cable, HD-TV-sets with HDMI-adaptor). So, in principle it should work (c) ;-) Sorry, if that does not help directly.

I use Gnome 3 and as soon as i plug-in the cable I see the new display in the gnome control center. If it helps I can provide you the output of xrandr -q or similar.

Ciao,

Photor

Offline

#7 2014-09-23 02:31:11

halocaridina
Member
From: US
Registered: 2014-07-21
Posts: 44

Re: Thinkpad T440s cannot connect to displayport

Hi meccanus,

Sorry to hear that the mini DisplayPort is not working for you. But like Photor, it has worked out-of-the-box using different adaptors (DVI and HDMI) and without additional configuration. Photor is using Gnome3 while I'm using no DE (i3 as a WM), so no pattern there. Proglodyte didn't mention a DE or WM in the posts while you are using KDE; maybe KDE is the commanailty (though that's making a big assumption)?

Does the mini DisplayPort work while running another OS (Windows or a live CD of another distro)? Such a test would help differentiate whether its a potential hardware issue.

Hope this helps.


4X Intel(R) Xeon(R) CPU E7-8870 @ 2.40GHz; 256GiB; 11TB EXT4; SL6.7
2X Intel(R) Xeon(R) CPU E5-2680 @ 2.70GHz; 256GiB; 3.4TB EXT4; SL6.7
Latitude 3150; Pentium N3540; 8GiB, 256GB THNSNJ25; Arch
Thinkpad T440S; Haswell-ULT Core i7; 12GiB, 512GB X210; Arch

Offline

Board footer

Powered by FluxBB