HP Elitedesk Ryzen 2400GE Blackscreen

HolzbeinWilli · December 2, 2024 at 8:22 PM

My System Specs

HP EliteDesk 705 G4 Mini

Ryzen 5 Pro 2400GE,

16GB RAM

Tried to install

LibreELEC-Generic.x86_64-12.0.1.img.gz

created a bootable Stick with the latest USB-SD Creator (tried etcher as well)
Boot to Stick
Select install

What happens is, nothing Screen stays black. The same happens when trying to use run and live options.

Thereafter, I tried

LibreELEC-Generic.x86_64-10.0.4.img.gz

Install works, Kodi works as expected.

Then, after reading through Redit, I updated LibreElec by the internal Update to 12.x, rebooted, Screen Stays black.

Is there any chance to get ^LibreElec 12 running on my machine or, do I need to install Debian, Fedora or smth to use Kodi?

**Da Flex** · December 3, 2024 at 4:51 AM

Tally Ho, Holzbein!

We want to check whether the right graphics driver was loaded. On LE 12.0.1:

login by SSH
activate log level 2 by creating advancedsettings.xml
reboot
login by SSH
post the resulting URL from pastekodi command

HolzbeinWilli · December 3, 2024 at 8:03 AM

Strange thing, i starteted the machine today, after i gave up yesterday..i did an update to 12.01 and seems to work now ..thats kinda Strange.

HolzbeinWilli · December 3, 2024 at 8:45 AM

OK, Addition: Because I'm unable to edit my previous Post:

As stated above, I booted successfully to Kodi checked the Version, it was 12.01 then tried a reboot, because i was curiouse why it worked now, and yesterday it did not, the result was Black Screen again.

Here is the pastekodi url:
https://paste.libreelec.tv/pet-dingo.log

**chewitt** · December 3, 2024 at 9:33 AM

Code

echo "sleep 10" > /storage/.config/autostart.sh

See if that ^ works around the issue? .. it will delay Kodi startup for 10 seconds, which should allow kernel drivers to finish loading in the background.

HolzbeinWilli · December 3, 2024 at 9:54 AM

Quote from chewitt
Code
echo "sleep 10" > /storage/.config/autostart.sh
See if that ^ works around the issue? .. it will delay Kodi startup for 10 seconds, which should allow kernel drivers to finish loading in the background.

Nope,

Same as before,just a Blackscreen

Tried with sleep 10 and sleep 30 aswell

**mglae** · December 3, 2024 at 4:33 PM

What if you power cycle again?

**chewitt** · December 3, 2024 at 4:54 PM

Any difference between cold boot and warm (re)boot?

HolzbeinWilli · December 3, 2024 at 4:56 PM

Quote from mglae

What if you power cycle again?

Same, I tried turing it of and on multiple times.

On 1 of about 30 tries it works, the other 29 times the screen stays black ..

Tested Windows yesterday just to be shure the EliteDesk is ok. No issues there.

Tried different DP cables as well.

HolzbeinWilli · December 4, 2024 at 5:27 PM

So tried the legacy image aswell. Same thing.

Makes no dif. If i hot or cold reboot ..

**mglae** · December 4, 2024 at 5:59 PM

1. With updating to LE12 nightly you do get kernel 6.6.63, maybe something is fixed:

Code

wget -P /storage/ https://test.libreelec.tv/12.0/Generic/Generic/LibreELEC-Generic.x86_64-12.0-nightly-20241204-f894320.img.gz

2. On one of the successful boots:
a. Create a log for our curiosity
b. Use getedid create to save the found configuration for further boots.

**Da Flex** · December 4, 2024 at 6:05 PM

I assume you use a DP-to-HDMI adapter, because your Mini PC only has two DisplayPort outputs. Try a different adapter, or a monitor with DisplayPort input. DP-to-HDMI is known to be a trouble maker.

HolzbeinWilli · December 4, 2024 at 7:28 PM

Quote from Da Flex

I assume you use a DP-to-HDMI adapter, because your Mini PC only has two DisplayPort outputs. Try a different adapter, or a monitor with DisplayPort input. DP-to-HDMI is known to be a trouble maker.

Already tried 2 different DP Cables without an Adapter. Same Issue.

**Da Flex** · December 4, 2024 at 9:08 PM

Quote from HolzbeinWilli

Already tried 2 different DP Cables without an Adapter. Same Issue.

Thanks. I assume you've also tried both DP ports.

Is your firmware up-to-date? Sometimes a Windows graphics driver contains firmware, which changes output behavior.

HolzbeinWilli · December 5, 2024 at 9:03 AM

Yep tried both on the EliteDesk and all DP / HDMI ports i have.

I would try a Firmware update next week and report back than .

Thx!

**mglae** · December 5, 2024 at 4:20 PM

Did check the log again, forget my older posts

Code

Dec 03 08:43:08.309240 LibreELEC kernel: PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug

Dec 03 08:43:08.310203 LibreELEC kernel: acpi PNP0A08:00: ignoring host bridge window [mem 0x000cc000-0x000cffff window] (conflicts with Video ROM [mem 0x000c0000-0x000cd3ff])

Dec 03 08:43:08.354949 LibreELEC kernel: [drm] BIOS signature incorrect 0 0
Dec 03 08:43:08.354974 LibreELEC kernel: resource: resource sanity check: requesting [mem 0x00000000000c0000-0x00000000000dffff], which spans more than PCI Bus 0000:00 [mem 0x000c0000-0x000cbfff window]
Dec 03 08:43:08.355000 LibreELEC kernel: caller pci_map_rom+0x83/0x220 mapping multiple BARs
Dec 03 08:43:08.355135 LibreELEC kernel: amdgpu 0000:0a:00.0: Invalid PCI ROM header signature: expecting 0xaa55, got 0xffff
Dec 03 08:43:08.355168 LibreELEC kernel: [drm] BIOS signature incorrect 0 0
Dec 03 08:43:08.355299 LibreELEC kernel: amdgpu 0000:0a:00.0: amdgpu: Fetched VBIOS from platform
Dec 03 08:43:08.355324 LibreELEC kernel: amdgpu: ATOM BIOS: SWBRT34978.001

Dec 03 08:43:08.357177 LibreELEC kernel: [drm] Unsupported Connector type:21!
Dec 03 08:43:08.357207 LibreELEC kernel: [drm] Unsupported Connector type:21!
Dec 03 08:43:08.357233 LibreELEC kernel: [drm] Unsupported Connector type:21!
Dec 03 08:43:08.357253 LibreELEC kernel: [drm] Unsupported Connector type:21!

Display More

A web search on Unsupported Connector type:21! lead to e.g. this thread where changing the boot mode help. Others succeed with firmware update or even create work around as here.

When firmware update is not successful I'm wondering if using pci=nocrs does change anything.

HolzbeinWilli · December 9, 2024 at 4:39 PM

So hello again mglae, unfortunately your links did not work, you made a mistake when posting the links I guess: NVM

What I tried:

BIOS Update to the latest one ⇒ did not change anything
Installed Nightly Build ⇒ No Changes
After that i Did
1. HP has a Boot timeout I, have set that to 5sec.
2. disabled Quick Boot
  Now, LibreElec seems to Boot normally without any issues… Currently.

Will do some Testing with the System^°°

THX for your Support Guy's, I Appreciate It.

EDIT: Solution finally was, Disable Legacy & Secure Boot

**mglae** · December 10, 2024 at 4:10 PM

Yes, links were somehow garbled - fixed.

Fine that it is working now.