Goal:
Connect laptop to docking station with external 32" TV screen.
Challenge:
Laptop is connected to the dock and I have three options for attaching cable to my TV screen.
1) VGA to VGA cable
2) DVI to DVI cable
3) DVI/HDMI adapter with HDMI to HDMI cable
If I have TV and Laptop screens open everything works fine BUT if I use only TV screen the screen starts to get random noise especially when moving the mouse.
Troubleshooting:
1) Tried different mouse and USB ports from docking station to laptop.
2) Tried different cable arrangements to the TV.
3) Tried without dock.
Datasheet:
OS: Ubuntu 18.04LTS 64-bit
Computer: Lenovo ThinkPad T400
http://www.thinkwiki.org/wiki/Category:T400
Docking Station: ThinkPad Advanced Mini Dock Model 2504
http://www.thinkwiki.org/wiki/ThinkPad_Advanced_Mini_Dock
TV: Sony KDL-32E5520
https://www.sony.co.uk/electronics/support/televisions-projectors-lcd-tvs/kdl-32e5520/specifications
Mouse: Lenovo USB
Keyboard: DELL RT7D00
Laptop: Lenovo ThinkPad T400
Ubuntu 18.04 LTS 64-bit
Processor Intel Core2 Duo CPU T9400 @ 2.53 GHz x 2 / 64-bit / 120 Gb / 4 Gb DDR3 SO-DIMM 1066 PC3-8500 (max. 8 Gb)/ 14.1WXGA+
Integrated videocard: Gallium 0.4 on AMD RV620 (DRM 2.43.0, LLVM 3.8.0)
Type: 2768-12G
S/N: L3-APA1M 09/01
MAC address:
BIOS version 3.24 (7UET94WW) (2.02 (7UET56WW))
BIOS Date 2012-10-17
