why my MacBook Air can't run external display with 2560 x 1080 ?

[iMore Question]

hi everyone I have a serious problem ..
I've bought today 21:9 LG monitor with resolution 2560 x 1080
when I connect my MacBook Air 2017 to the monitor I can't use it with the recommended resolution of 2560 x 1080
how can I fix this problem ?

 

[pkcable]

According to the specs it supports even higher resolutions. Perhaps you need a special cable?

https://www.apple.com/macbook-air/specs/#mn_p

 

[Just_Me_D]

hi everyone I have a serious problem ..
I've bought today 21:9 LG monitor with resolution 2560 x 1080
when I connect my MacBook Air 2017 to the monitor I can't use it with the recommended resolution of 2560 x 1080
how can I fix this problem ?

Your question is quite vague. What have you done to get the resolution to work properly?

 

[vladislav661]

tried to play with the settings and also tried the switchrex also didn't help what should I do ?