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Switching monitor resolution in System 7.0.1
Posted by: VMSZealot on 2015-06-20 15:27:59
I have a Quadra 650 running A/UX and hence System 7.0.1. Question is, how do I switch monitor resolutions - the monitors control panel doesn't show different resolutions, it just says Apple 21" Monitor (it isn't - it's a Samsung LCD). At the moment, I have to switch to MacOS 8.1, switch resolution and then reboot. Inconvenient to say the least!

Posted by: bamdad on 2025-01-12 08:42:57
i know this is an old topic, but have you figured it out? i have a Q700 and it's behaving exactly the same.. i even tried using the monitors control panel from system 7.5.5 but that didn't help at all, nor adding the 'quadra monitors extension' to my user's system folder.
Posted by: cheesestraws on 2025-01-12 09:19:18
Which monitor adapter are you using?
Posted by: joevt on 2025-01-12 14:55:59
i have a Q700 and it's behaving exactly the same
Are you also using A/UX?
Posted by: bamdad on 2025-01-14 07:55:05
Which monitor adapter are you using?
i'm using this one with 10 switches:
1736869930400.png
1736870069878.png
my current settings are: 1-4-5-8 for "multiple scan 16" - the "multiple scan 21" one doesn't give me all the resolutions under 7.5.5
Posted by: bamdad on 2025-01-14 07:55:44
Are you also using A/UX?
yes i am
Posted by: joevt on 2025-01-14 16:58:40
i'm using this one with 10 switches:

my current settings are: 1-4-5-8 for "multiple scan 16" - the "multiple scan 21" one doesn't give me all the resolutions under 7.5.5
According to my notes at https://tinkerdifferent.com/threads/documentation-for-db15-to-vga-adapters.318/post-21290 , the MULITPLE-SCAN 16" and MULITPLE-SCAN 21" items are reversed. Which means MULITPLE-SCAN 16" is for 21" displays and therefore has more options.
Posted by: bamdad on 2025-01-14 17:41:36
According to my notes at https://tinkerdifferent.com/threads/documentation-for-db15-to-vga-adapters.318/post-21290 , the MULITPLE-SCAN 16" and MULITPLE-SCAN 21" items are reversed. Which means MULITPLE-SCAN 16" is for 21" displays and therefore has more options.
aha, that actually explains a lot, thanks : ) it doesn't solve the <system 7.5.x and A/UX dynamic resolution switching thing though..
Posted by: bamdad on 2025-01-14 17:44:08
btw just some random info from here:

21" and 16" color monitors default to the “Page-White Gamma” profile which affects white balance. This can be changed in the Monitors control panel.

so that's why i'm seeing everything in yellow under A/UX by default even though i've changed it in the pre-boot system 7.0.1 and on 7.5.5 too.
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