When docking my Lenovo T430 laptop running Windows 8, one of my two Acer S240HL monitors goes black & white; always monitor 1 of 2.
- Open the NVIDA control panel
- Notice “Digital vibrance” has changes to 0%
- Click “Restore Defaults” in the top right corner and click Apply. This will return the setting to 50%
The permanent fix
In the recent round of Windows updates there appears to have been a fix. The issue fixed it self…
It’s very useful to use RADIUS for authentication. This post is aimed at providing the quick and dirty details to make it happen on the HP A-series and E-series equipment.
Important note: Be sure to set a local manager account on all switches before enabling RADIUS. If you do not set a local manager account and RADIUS is not reachable, then you will not be able to manager your gear.
Tested on: 5920 & 5820
Manager rights: cisco-AV-Pair shell:roles=network-admin
Ready-Only: cisco-AV-Pair shell:roles=level-1
The important thing to note here is that there are no attributes currently available that will grant you a specific level of rights. Use RADIUS to controll access, then use the super command to control the access level.
example radius scheme configuration
radius scheme radius-auth
primary authentication <server>
primary accounting <server>
key authentication <key>
key accounting <key>
super password level 1 simple <password>
super password level 2 simple <password>
super password level 3 simple <password>
Tested on: 3800
Enabled mode: RADIUS Attributes > Standard: Service-Type:Administrative
Monitor mode: RADIUS Attributes > Standard: Service-Type:NAS Prompt
radius-server host <server> key <key>
aaa authentication ssh login radius local
aaa authentication ssh enable radius local
aaa authentication login privilege-mode