robi62 Posted February 24, 2021 Share Posted February 24, 2021 Hi guys I saw on Reddit that someone was successful in installing Big Sur on the above laptop with OpenCore with touch screen working. I managed to buy 1 for a cheap price and the installation went well except that there is no fan detected so fans are almost always on and I cannot apply rehabman fan patch. I managed to find a clover efi folder from Mojave where everything works even fans so I applied the patch. I have been trying Big Sur with OpenCore for a week almost everyday trying experiments, no joy and I'm getting frustrated trying with different ssdt, going to bed late at night but no joy, even with clover although I updated clover to latest version; it won't boot. I enclose both efi folders in case someone can point me in the right direction as I am about to throw the laptop in despair I don't know what to do anymore PS: After sleep touch screen does not work I think because is found as USB EFIS.zip Quote Link to comment Share on other sites More sharing options...
Administrators Hervé Posted February 24, 2021 Administrators Share Posted February 24, 2021 Can you please post the detailed specs of the computer? Touchscreens usually are USB-based so if yours does not work after sleep, it's indeed a USB-related problem. Quote Link to comment Share on other sites More sharing options...
robi62 Posted February 24, 2021 Author Share Posted February 24, 2021 Hi Hervé I'm glad you have answered the keyboard is French but I do not know what I need to press to get the @ sign Specs are as follows: Laptop Make and Model: HP Revolve 810 G2 CPU: Intel Core i5-4310U CPU @2.00GHz GPU: Intel HD Graphics 4400 RAM: 4GB Audio Codec: IDT 92HD91BXX (layout 13) Ethernet Card: Intel® l218LM GbE Wifi/BT Card: WiFi - Intel 7260 / Intel BT More detailed specs here: product-pdf.zip If you need more details let me know Quote Link to comment Share on other sites More sharing options...
Administrators Hervé Posted February 24, 2021 Administrators Share Posted February 24, 2021 Nice little toy! Make sure to select "French PC" keyboard. Then you may obtain the "@" character through either [ALT][à] or [Win][à] depending on whether you've swapped Option and Command keys or not. Regarding your OpenCore setup, you may seek inspiration from the Big Sur guide I posted for my Toshiba Satellite Pro R50-B. It's a similar type of Haswell platform with i5-4210U & HD4400 graphics. Obviously not all kexts are applicable to your HP laptop since it has different audio/LAN/wifi/etc. but most of the OC config should be re-usable, especially the Quirks. One parameter that I expect you'll specifically require will be Lapic kernel patch (because it's a HP platform). Quote Link to comment Share on other sites More sharing options...
robi62 Posted February 24, 2021 Author Share Posted February 24, 2021 Hi Herve' thanks for the @ suggestion it works now I know hp require lapic kernel patch but all my system which are hp I don't have it and I have no problems with it The only problem with OpenCore setup is the fan While I was playing with differnts dsdt and configs form other hp there was 1 where fan was detected but then I did not have the battery Unfortunately as I tried so many efis I cannot remember which one it was I did write on it fan ok no batt but god knows what happened to it If I cannot sort it there is no option but to go back to Mojave Quote Link to comment Share on other sites More sharing options...
Administrators Bronxteck Posted February 24, 2021 Administrators Share Posted February 24, 2021 you can try this. it has a fan read ssdt. but i do not know if it gives control to the os https://github.com/scarymen1325/opencore_hp_810_g2 Quote Link to comment Share on other sites More sharing options...
robi62 Posted February 24, 2021 Author Share Posted February 24, 2021 Hi that’s the one I’m using so no fan Is there a way with registry explorer to find out where is the fan??? Quote Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted February 25, 2021 Moderators Share Posted February 25, 2021 It the SSDT's in the Clover file works, why don't you reuse them? Can you post the IOReg file from both OS's Clover with Mojave Big Sur with OC Quote Link to comment Share on other sites More sharing options...
robi62 Posted February 25, 2021 Author Share Posted February 25, 2021 Hi Jake Lo I tried to boot with ssdt from Mojave it won't boot I noticed with Mojave after sleep I still have touchscreen while in bigSur I have not As I was saying there was an efi while I was testing with differents config from other hp laptop that fan was working but then no battery I enclose my IORegistry file from both os Archive.zip Quote Link to comment Share on other sites More sharing options...
robi62 Posted February 26, 2021 Author Share Posted February 26, 2021 A little update I found the efi folder when fan is working but battery is not It s a modified hp 840 G1 efi which in specs its almost similar to mine I attach it in case you can figure out something about the fan EFI.zip Quote Link to comment Share on other sites More sharing options...
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