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Cannot change screen resolution on an Ultra 5 using m64config

807557
807557 Member Posts: 35,835
I have an Ultra 5 with Solaris 2.6 connected to a Xerox XR6-19Dw 19" widescreen monitor with 1440x900 pixels. This workstation was set up a long time ago, so I do not know exactly how it has been set up. The screen resolution is set to 1280x1024x60 and it looks very blurry due to the mismatch between LCD pixels and the resolution setting. First I tried m64config -res 1440x900x76 try. This just turns the screen all white, luckily it reverts to the old setting after 10 seconds. Then just for fun I tried m64config -res 1280x1024x60. This also turned the screen all white. I have heard there is also a way to set the screen resolution using the boot prom, but that this is not necessary because m64config should work. It is very important that I do not mess up this workstation, but the eyestrain is a big problem. Is there a safe way to fix this?

Comments

  • joshxdr wrote:
    I have an Ultra 5 with Solaris 2.6
    ...
    The screen resolution is set to 1280x1024x60 and it looks very blurry
    ...
    It is very important that I do not mess up this workstation,
    ...
    Is there a safe way to fix this?
    Get a different monitor. Use one that is far less capable and has an old-style 4:3 screen ratio (not a wide screen).

    The integrated graphics of the Ultra5/Ultra10 platform has only 4MB of frame buffer RAM and defaults to Sun's screen output of 1152x900 at 66Hz refresh. In fact, very early Ultra 5 systems had only 2MB of frame buffer RAM for the integrated graphics. The hardware is incapable of providing anything like what you are asking for.

    If you don't care about color depth, the 1280x1024 resolution you currently see is the highest you're going to get. There is absolutely no chance for any wide-screen settings. If you ever hope for 24bit color, you will have to go down to the 1152x900 setting or more probably down to 1024x768.

    You're system is a design from 1997 that first shipped to paying customers in 1998.
    I think you are hoping for too much out of that dinosaur.
  • 807557
    807557 Member Posts: 35,835
    I am afraid you are correct. I found another Ultra 5 to play around with. Using very old 19" Sun branded CRT, I was able to change resolutions with OBP and with m64config. I think the max resolution I was able to get was 1280x1024x75, which looks quite nice considering it is 1998 technology. When I connected the LED screen and ran boot -r, the only resolution I could get was 1280x1024x60. I could not change it to any other resolution. I think the old m64 graphics adapter is trying to talk to the monitor to ask what resolutions are "safe", but it just does not know how to talk to the LED screen.

    My experience was that "m64config -prconf" and "m64config -res ?" both provide long lists of screen resolutions you cannot actually use, so you really need to use trial and error more than anything else.

    Thanks for your reply!
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