Hi,

Same issue as #4561 but in a different context. When playing SDL2 games on a CRT screen (with resolutions lower than 320x200) X fails with:

X Error of failed request: BadValue (integer parameter out of range for operation)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 7 (RRSetScreenSize)
Value in failed request: 0x130
Serial number of failed request: 260
Current serial number in output stream: 261

This happens because the drivers have a resolution low limit, but this never happened prior to SDL 2.0.16. As the the issue mentionned above, this is triggered by calling RRSetScreenSize

Edit : changed the SDL2 problematic version from SDL 2.0.18 to 2.0.16, my bad