Hello Everyone,

For some time now, I have been using my laptop as well as an external monitor. The Laptop's native resolution is 1366x768 and the external monitor's resolution is 1280x1024. Up until today, it worked perfectly. I was able to set the resolution of the screens through the Monitor Preferences application to their correct values. However, today when I turned on my computer, the option for 1280x1024 just flat out wasn't there. I restarted my computer and everything but no luck, the option is just gone. I have no idea what could have caused this to happen. I remember yesterday I connected my laptop to another display with a higher resolution for a couple of hours (I was working at another desk) but this definitely should not have deleted 1280x1024 being an option. I tried manually readding 1280x1024 by using xrandr:

$xrandr --newmode fix 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -Hsync +Vysnc

$ sudo xrandr --addmode LVDS fix

But the second command gave this error:

X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 155 (RANDR)
Minor opcode of failed request: 18 (RRAddOutputMode)
Serial number of failed request: 25
Current serial number in output stream: 26

Can anyone tell me what is wrong?

Thanks.