Scanlines in BIOS, Grub and console with GT730 at any resolution

Just what the title says. I can’t make the scanlines go away. Grub and hwinfo also report different supported framebuffer resolutions.

It makes BIOS settings and console text very hard to see. I have had this problem every since I got this card years ago.
nvidia-bug-report.log.gz (123 KB)

This is due to your monitor being a crt and low resolution in bios/console. To improve this, a doublescan mode would have to be used. Setting this for bios isn’t possible afaik, for textconsoles, use the video= kernel parameter to set a higher resolution or a doublescan mode, if possible.

Nothing here says doublescan. Do you have any suggestions? I’ve tried a few vga= options without success.

$ sudo hwinfo --framebuffer
[sudo] password for keantoken:
02: None 00.0: 11001 VESA Framebuffer
[Created at bios.459]
Unique ID: rdCR.t5tfVCWYRqF
Hardware Class: framebuffer
Model: “NVIDIA GK208 Board - 21320010”
Vendor: “NVIDIA Corporation”
Device: “GK208 Board - 21320010”
SubVendor: “NVIDIA”
Revision: “Chip Rev”
Memory Size: 14 MB
Memory Range: 0x01000000-0x01dfffff (rw)
Mode 0x0300: 640x400 (+640), 8 bits
Mode 0x0301: 640x480 (+640), 8 bits
Mode 0x0303: 800x600 (+800), 8 bits
Mode 0x0305: 1024x768 (+1024), 8 bits
Mode 0x0307: 1280x1024 (+1280), 8 bits
Mode 0x030e: 320x200 (+640), 16 bits
Mode 0x030f: 320x200 (+1280), 24 bits
Mode 0x0311: 640x480 (+1280), 16 bits
Mode 0x0312: 640x480 (+2560), 24 bits
Mode 0x0314: 800x600 (+1600), 16 bits
Mode 0x0315: 800x600 (+3200), 24 bits
Mode 0x0317: 1024x768 (+2048), 16 bits
Mode 0x0318: 1024x768 (+4096), 24 bits
Mode 0x031a: 1280x1024 (+2560), 16 bits
Mode 0x031b: 1280x1024 (+5120), 24 bits
Mode 0x0330: 320x200 (+320), 8 bits
Mode 0x0331: 320x400 (+320), 8 bits
Mode 0x0332: 320x400 (+640), 16 bits
Mode 0x0333: 320x400 (+1280), 24 bits
Mode 0x0334: 320x240 (+320), 8 bits
Mode 0x0335: 320x240 (+640), 16 bits
Mode 0x0336: 320x240 (+1280), 24 bits
Mode 0x033d: 640x400 (+1280), 16 bits
Mode 0x033e: 640x400 (+2560), 24 bits
Mode 0x0345: 1600x1200 (+1600), 8 bits
Mode 0x0346: 1600x1200 (+3200), 16 bits
Mode 0x034a: 1600x1200 (+6400), 24 bits
Mode 0x034b: 1280x720 (+1920), 8 bits
Mode 0x034c: 1280x720 (+3840), 16 bits
Mode 0x034d: 1280x720 (+7680), 24 bits
Mode 0x0360: 1280x800 (+1280), 8 bits
Mode 0x0361: 1280x800 (+5120), 24 bits
Config Status: cfg=new, avail=yes, need=no, active=unknown

I suspect with vesafb, you can only set a higher resolution, no doublescan supported. Maybe try fbset to see what works.