Software Support > GroovyMAME
GroovyArcade live-CD 2022 (collaborative effort)
Substring:
Flashing the video BIOS is a safety for monitors so that at boot time it's 15kHz, not 31. That's all. Your JPAC also has such a protection. Once the linux kernel loads, it handles resolutions.
The USB method is just to test, changes are not permanent.
arfink:
I'm interested in trying your build, I just received my Radeon HD card today. However, my monitor will require composite sync, is that supported here? I couldn't get composite sync to work with old GA builds using Nvidia, just wanted to know it's ok with Radeon.
Substring:
--- Quote from: arfink on March 10, 2020, 04:24:42 am ---I'm interested in trying your build, I just received my Radeon HD card today. However, my monitor will require composite sync, is that supported here? I couldn't get composite sync to work with old GA builds using Nvidia, just wanted to know it's ok with Radeon.
--- End quote ---
Technically speaking, c-sync is possibe, but not out of the box. This also seems to depend on GFX cards, kernel drivers show that only radeon/amd cards seem to support it. All in all: if your GFX card supports it, linux can use it. But there is a major BUT: nothing in GA is made yet to handle csync. That means none of the kernel fixed resolutions for 15k, nor any script.
Now 2 points:
- can't you output csync by yourself ? This is monitor-dependant. Sometimes just mixing hsync and vsync will work, some time electronics must be involved.
- you're not the first one asking for csync. Although it implies quite some changes, that's something I may consider (but will take months before I spend time on it).
Also remember that it means that switchres must be able to handle csync, which is not (yet ?) the case on Linux. So I think that, for now, the best option is to go the hardware hack path.
arfink:
I'll try just tying the wires together to start, if that doesn't work I have another monitor that's HV sync I will try instead.
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2020.03 is out :) Don't upgrade systemd, 245 has issues with the splash boot
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