RootlessCosmopolitan

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RootlessCosmopolitan
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  • Display lines on 27-inch iMac may be Radeon Pro 5700XT GPU issue

    RootlessCosmopolitanRootlessCosmopolitan
    cdoubleu said:
    I have experienced graphical glitches consisting of triangles and lines on my 2020 iMac w. 5700XT. It requires a reboot to resolve them. I am also experiencing crashes where the whole system becomes unresponsive also requiring a (hard) reboot. I can replicate this consistently by playing Civ 6 - it typically freezes 20 minutes into a session.
    I have been experiencing exactly the same issue, i.e., playing Civ 6 on my new 2020 iMac w/ 5700 xt causes the iMac to crash. The screen looks the same, too, with graphical glitches that look like shards. 

    I reset SMC & NVRAM but the problem persists. 

    My 2020 iMac: 
    ・2020 27-inch iMac
    ・3.6 GHz 10-core Intel Core i9
    ・32 GB RAM
    ・AMD Radeon Pro 5700 XT 16 GB
    watto_cobra