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Lenovo T470 OC Big Sur working except sound

Joined
Nov 16, 2020
Messages
16
Motherboard
p51
CPU
i7
Graphics
m2200/630
Hello all,

I am using the following EFI, which has battery, brightness/sound keys working along with intel lan, wifi, bluetooth.

Any advice how to troubleshoot audio with Realtek HD audio ?
I am familiar with adding removing kexts, but not with checking if this is matter of patching some files rather than just replacing some kexts.

Regards,
n.
 

Attachments

  • #6 EFI no sound.zip
    35.9 MB · Views: 138
  • t470hwa.jpg
    t470hwa.jpg
    189.5 KB · Views: 86
  • t470hwb.jpg
    t470hwb.jpg
    165.2 KB · Views: 93

Feartech

Moderator
Joined
Aug 3, 2013
Messages
23,596
Motherboard
Asus N752VX-OpenCore
CPU
i7-6700HQ / HM170
Graphics
HD 530 1920 x 1080
Mac
  1. iMac
Mobile Phone
  1. iOS
Hello all,

I am using the following EFI, which has battery, brightness/sound keys working along with intel lan, wifi, bluetooth.

Any advice how to troubleshoot audio with Realtek HD audio ?
I am familiar with adding removing kexts, but not with checking if this is matter of patching some files rather than just replacing some kexts.

Regards,
n.
 
Joined
Nov 16, 2020
Messages
16
Motherboard
p51
CPU
i7
Graphics
m2200/630
thanks i will go through that.
 
Joined
Nov 16, 2020
Messages
16
Motherboard
p51
CPU
i7
Graphics
m2200/630
alcid=3 did the job :) external speakers are now ok, plug is still having issues, but i never use it anyway.

As soon as i figure out the dual battery thing i will post the final t470 EFI.
 
Joined
Feb 10, 2020
Messages
1
Motherboard
Lenovo T470 - Clover
CPU
i5-6200U
Graphics
HD 520, 1920*1080
Mac
  1. MacBook
Mobile Phone
  1. Android
Hello septicc
Were you able to solve your problem ? You can publish your EFI folder
thank you
 
Joined
Nov 16, 2020
Messages
16
Motherboard
p51
CPU
i7
Graphics
m2200/630
Everything works, except:
- the2nd battery which is not detected, so warning message is displayed early for plug or go to shutdown
- usb-c dock works problematic, only one display is possible at a time, either laptop monitor or an external.
 

Attachments

  • T470 no 2nd battery.part1.rar
    8 MB · Views: 60
  • T470 no 2nd battery.part2.rar
    8 MB · Views: 56
  • T470 no 2nd battery.part3.rar
    8 MB · Views: 55
  • T470 no 2nd battery.part4.rar
    2.7 MB · Views: 61
Joined
Sep 6, 2019
Messages
2
Motherboard
asus
CPU
i7
Graphics
Nvidia
Mac
  1. MacBook Pro
Mobile Phone
  1. Android
I've used your EFI and have added alcid=47 which made audio work for me, the battery is very buggy thou... any updates mate?
 
Joined
Sep 6, 2019
Messages
2
Motherboard
asus
CPU
i7
Graphics
Nvidia
Mac
  1. MacBook Pro
Mobile Phone
  1. Android

may be patching DSDt with X220 battery patch works, give a try mate. @septicc
 
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