Usar o nomodeset não me permite alterar o brilho, executando-o ao vivo com alterações de nomodeset para uma resolução estranha.
Dispositivo: Asus ROG gl552vw cn426t
[ 0.369674] CPU1: Core temperature above threshold, cpu clock throttled (total events: 1)
[ 0.369678] CPU1: Package temperature above threshold. cpu clock throttled (total events: 1)
[ 0.369681] CPU5: Core temperature above threshold. cpu clock throttled (total events: 1)
[ 0.369632] CPU4: Package temperature above threshold, cpu clock throttled (total events: 1)
[ 0.369633] CPU3: Package temperature above threshold, cpu clock throttled (total events: 1)
[ 0.369684] CPU2: Package temperature above threshold, cpu clock throttled (total events: 1)
[ 0.369635] CPU7: Package temperature above threshold. cnu clock throttled (total events: 1)
[ 0.369636] CPU6: Package temperature above threshold, cpu clock throttled (total events: 1)
[ 0.369637] CPU3: Package temperature above threshold. cpu clock throttled (total events: 1)
[ 0.369700] CPU5: Package temperature above threshold. cpu clock throttled (total events: 1)
[ 5.423730] nouveau 0000:01:00.0: bus: HHIO read of 00000000 FAULT at 022554
[ IBUS ]
[ 5.425202] nouveau 0000:01:0a.0: bus: HHIO read of 00000000 FAULT at 10ac08
[ IBUS ]
BusyBox v1.22.1 (ubuntu 1:1.22.0-19ubuntu2) built-in shell (ash)
Enter help for a list of built-in commands
(initramfs)
Unable to find a medium containing a live file system
