more external display woes... SOLVED (sort of)

[CS DBA]

On 09/15/2015 11:46 PM, Robin Laing wrote:
> On 2015-09-11 20:44, CS DBA wrote:
>> F22 works until I update, closing this thread for a more appropriate
>> one, sent a new email:
>> Fedora 22 - no external monitor after kernel update
>>
>>
>>
>>
>> On 09/11/2015 05:16 PM, CS DBA wrote:
>>> All;
>>>
>>> I bought a new Lenovo X1 Carbon 3rd generation, installed Fedora 21
>>> and neither the mini display port or the HDMI port work per an
>>> external display.
>>>
>>> Installed Fedora 22 as well but it has the same issue.
>>>
>>> Can someone help me debug this?
>>>
>>>
>>> Thanks in advance
>>
>
> What video card?
>
> If nVidia, it is most likely and Optimus issue.
>
>
>
>

Intel HD Graphics 5500

Also, it turns out the HDMI port works even with the latest kernel.

Screen is still a bit washed out but not bad if I run "xgamma gamma .8" 
in /etc/X11/xinit/xinitrc.d/75-set-xgamma.sh