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t2linux / T2-Debian-and-Ubuntu-Kernel

Ubuntu Kernel for T2 Macs.
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The external monitor was lost after upgrading to the latest kernel #49

Closed Rom888 closed 9 months ago

Rom888 commented 9 months ago

Ubuntu cannot recognize the external connected monitor after updating the kernel to the latest version using the update_t2_kernel command and "sudo apt update && sudo apt upgrade"

I have an external monitor connected via an HDMI to USB-C adapter and it worked fine before.

I'd appreciate any help, thanks!

my pc:

macbook pro, 16 inch, 2019
have the Apple T2 Security Chip (hardware- controller-)
model identifier: MacBookPro16.1
Intel Core i9 2.3g

Intel UHD graphics 630
AMD radeon pro 5500M

iGPU is enabled using this guide:
https://wiki.t2linux.org/guides/hybrid-graphics/#enabling-the-igpu

Ubuntu 22.04

$ lspci -v | grep VGA -A2

00:02.0 VGA compatible controller: Intel Corporation CoffeeLake-H GT2 [UHD Graphics 630] (rev 02) (prog-if 00 [VGA controller])
  Subsystem: Apple Inc. CoffeeLake-H GT2 [UHD Graphics 630]
  Flags: bus master, fast devsel, latency 0, IRQ 63, IOMMU group 0
--
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 14 [Radeon RX 5500/5500M / Pro 5500M] (rev 40) (prog-if 00 [VGA controller])
  Subsystem: Apple Inc. Navi 14 [Radeon RX 5500/5500M / Pro 5500M]
  Flags: bus master, fast devsel, latency 0, IRQ 64, IOMMU group 2
--
04:00.1 Non-VGA unclassified device: Apple Inc. T2 Bridge Controller (rev 01)
  Subsystem: Apple Inc. T2 Bridge Controller
  Flags: bus master, fast devsel, latency 0, IRQ 65, IOMMU group 10
--
04:00.2 Non-VGA unclassified device: Apple Inc. T2 Secure Enclave Processor (rev 01)
  Subsystem: Apple Inc. T2 Secure Enclave Processor
  Flags: bus master, fast devsel, latency 0, IOMMU group 10
Rom888 commented 9 months ago

I tried a different adapter and it works, so I think the problem might be the adapter.