P96 3.3.0: CirrusGD5434 can't switch from higher to lower color depths anymore

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Don't Panic. Please wash hands.

    I just upgraded two machines to 3.3.0 and belatedly discovered that if I increase the color depth, the screen becomes unusable upon switching back to the original lower color depth. Here's my repro on two different machines:

    1. Boot into 1024x768 8-bit
    2. Test another screen mode, like 1024x768 16-bit or 800x600 32-bit. It displays properly
    3. Return to the original mode. The picture is unreadable with the wrong colors, necessitating a reboot.

    I'm using a GBAPII++ in both. I upgraded the CirrusGD5434 chipset driver when upgrading P96 by selecting Piccolo SD64. If I restore CirrusGD5434.chip from 3.2.4, the regression goes away.

    This is already fixed internally, but for now it's safe to switch back to the 3.2.4 driver. It's not much that has changed in 3.3.0 - you're not missing out on anything.

  • The last reply was more than 365 days ago, this thread is most likely obsolete. It is recommended to create a new thread instead.

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