NV46 G72M picture is always distorted on VGA output
Submitted by RussianNeuroMancer @RussianNeuroMancer
Assigned to Nouveau Project
Description
Created attachment 123785
photo
On laptops with G72M picture on VGA output is always wavy (please look into attached photo). That was tested with two laptops (with 7300 Go and 7400 Go) couple of projectors (800x600) and few displays (up to 1920x1080) - issue is reproducible with any combination with any Linux that was released for latest ~three years (with Linux 4.6 too). Other issue is that VGA output is always mirror of internal laptop screen, no matter what settings I set (again, as you can see on attached photo).
01:00.0 VGA compatible controller: NVIDIA Corporation G72M [GeForce Go 7400] (rev a1)
Issue is not reproducible with proprietary driver (however this driver have other issues, like lack of proper V-Sync, and latest KWin is crash on nvidia 304 driver even if all effects disabled).
Attachment 123785, "photo":
