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I hope we can fix audio of Dell Latitude 7350 Big Sur 11.1 OC


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My hardware

  • Dell Latitude 7350
  • m-5y71
  • Intel HD 5300
  • Audio : Intel I2S with ALC3263(ALC286 refer to ubuntu)

 

 

Sympton

  • HDMI audio is working
  • I tried fixing audio from Mojave to Big Sur, but not worked.
  • Refer to DSDT dump, I have HDEF device without any patch. (I dumped from ubuntu without oc or clover)
  • However, I can't find HDEF device in IORegistry. I think that's why I can't fix the audio.
  • So, I tried to inject SSDT-HDEF.aml. But not worked.
  • It could be my mistake because my desktop lost audio from rebuilding the hackintosh for hw upgrade(it's HDMI audio works too)

 

I upload OC folder without kext(due to huge size of itlwm)

kextlist.png

OC.zip DSDT.aml SSDT-HDEF.aml config.plist

If all that SSDT-HDEF does is inject layout-id #1 for Realtek ALC286 audio codec, it's totally unnecessary; just use boot arg alcid=xx in your OC config file, where xx is the layout id. Refer to AppleALC wiki for a list of layout ids applicable to this codec (#1 does not appear to be one of them),

 

Also:

  • FakePCIID kext is not necessary either, you should remove it.
  • No serial number in the SMBIOS settings of your OC config file. Unless this was a deliberate removal, you ought to revise this.

Looking at your config.plist I find it strange that all the devices listed refer to wildcat point-lp series but the audio controller is listed as a Broadwell-U serie ... usually all devices refer to the same serie, here it seems to be WilcatPoint-LP.

 

So I would try changing:

 

<dict>
    <key>PciRoot(0x0)/Pci(0x3,0x0)</key>
    <dict>
        <key>AAPL,slot-name</key>
        <string>Built-in</string>
        <key>compatible</key>
        <string>pci8086,160c</string>
        <key>device_type</key>
        <string>Audio Device</string>
        <key>model</key>
        <string>Broadwell-U Audio Controller</string> ???
 

to:

 

<key>PciRoot(0x0)/Pci(0x3,0x0)</key>
    <dict>
        <key>layout-id</key>
        <integer>11</integer>
   </dict>

 

The other value that is listed to work with the ALC286 codec is 3.
 

On 4/8/2021 at 4:14 PM, Hervé said:

If all that SSDT-HDEF does is inject layout-id #1 for Realtek ALC286 audio codec, it's totally unnecessary; just use boot arg alcid=xx in your OC config file, where xx is the layout id. Refer to AppleALC wiki for a list of layout ids applicable to this codec (#1 does not appear to be one of them),

 

Also:

  • FakePCIID kext is not necessary either, you should remove it.
  • No serial number in the SMBIOS settings of your OC config file. Unless this was a deliberate removal, you ought to revise this.

 

Thanks. I just removed FakePCIID to optimize system.

 

On 4/8/2021 at 4:33 PM, Slice said:

I afraid we have no driver for Intel I2S .

 

I'm really sad about that... :-(

 

9 hours ago, Septendre said:

Looking at your config.plist I find it strange that all the devices listed refer to wildcat point-lp series but the audio controller is listed as a Broadwell-U serie ... usually all devices refer to the same serie, here it seems to be WilcatPoint-LP.

 

So I would try changing:

 

<dict>
    <key>PciRoot(0x0)/Pci(0x3,0x0)</key>
    <dict>
        <key>AAPL,slot-name</key>
        <string>Built-in</string>
        <key>compatible</key>
        <string>pci8086,160c</string>
        <key>device_type</key>
        <string>Audio Device</string>
        <key>model</key>
        <string>Broadwell-U Audio Controller</string> ???
 

to:

 

<key>PciRoot(0x0)/Pci(0x3,0x0)</key>
    <dict>
        <key>layout-id</key>
        <integer>11</integer>
   </dict>

 

The other value that is listed to work with the ALC286 codec is 3.
 

 

Thanks... But both 11 and 3 were not working.

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