flyingfishfinger_1 Posted September 26, 2021 Share Posted September 26, 2021 Hi, On a whim I tried installing Big Sur on my Kaby Lake R (UHD 620) laptop. The install succeeded, however for each VALID platform-ID I put in the config, I get a kernel panic. And obviously if I put in something invalid, there's no graphics acceleration. I tried the same setting that work "ok" (as in, acceleration works) for my Mojave install, but that gives the KP or a hang. I have the latest Lilu & WEG, OC 0.7.3 and (so far) no external displays. Are there any obvious "gotchas" I'm missing to make Big Sur work? (For those following, yes this is a separate install / SSD from my somewhat problematic Mojave install for which I have a thread in the relevant forum) Cheers, R Link to comment Share on other sites More sharing options...
Baio77 Posted September 26, 2021 Share Posted September 26, 2021 Look this https://github.com/Lorys89/DELL_VOSTRO_5471 Link to comment Share on other sites More sharing options...
MaLd0n Posted September 26, 2021 Share Posted September 26, 2021 Use this patch with MacBookPro14,1 smbios Quote <key>PciRoot(0x0)/Pci(0x2,0x0)</key> <dict> <key>AAPL,ig-platform-id</key> <data>AADAhw==</data> <key>device-id</key> <data>FlkAAA==</data> <key>framebuffer-con1-alldata</key> <data>AQUJAAAIAACHAQAA</data> <key>framebuffer-con1-enable</key> <data>AQAAAA==</data> <key>framebuffer-con2-alldata</key> <string><02040a00 00080000 87010000></string> <key>framebuffer-con2-enable</key> <data>AQAAAA==</data> <key>framebuffer-fbmem</key> <data>AACQAA==</data> <key>framebuffer-patch-enable</key> <data>AQAAAA==</data> <key>framebuffer-stolenmem</key> <data>AAAwAQ==</data> </dict> Link to comment Share on other sites More sharing options...
flyingfishfinger_1 Posted September 26, 2021 Author Share Posted September 26, 2021 Oh I should note that I probably don't need any stolenmem, I can set my DVMT to 64MB in BIOS. Will try these though, thanks! R Link to comment Share on other sites More sharing options...
makk Posted September 27, 2021 Share Posted September 27, 2021 9 hours ago, flyingfishfinger_1 said: Oh I should note that I probably don't need any stolenmem, I can set my DVMT to 64MB in BIOS. Will try these though, thanks! R You need this in the config.plist so it will work regardless of your BIOS. If you don't put in there not going to accelerate, it's called a 'patch' Link to comment Share on other sites More sharing options...
flyingfishfinger_1 Posted September 27, 2021 Author Share Posted September 27, 2021 20 hours ago, MaLd0n said: Use this patch with MacBookPro14,1 smbios Doesn't work, "freezes at [IGPU] Render Compression for IOSurface is Enabled" Same result as any "valid" platform-ID that I've tried, sadly. R Link to comment Share on other sites More sharing options...
deeveedee Posted September 27, 2021 Share Posted September 27, 2021 @flyingfishfinger_1 - I use SMBIOS MacModel MBP15,2 for my HP Envy Kabylake R (i5-8250U/UHD620). I was recently experiencing kernel panics which I have resolved as noted here. I am now running without defining framebuffer-stolenmem and framebuffer-fbmem (even though I cannot configure VRAM in BIOS) and my rig is rock-solid. Link to comment Share on other sites More sharing options...
flyingfishfinger_1 Posted September 27, 2021 Author Share Posted September 27, 2021 I'll take a read. So far though, I can only boot if I use an invalid platform-id. Period 😕 R Link to comment Share on other sites More sharing options...
Recommended Posts