UEFI booting with Yoga 370

[sudburr]

Was able to squeeze in a baseline observation before I go onto other things and I’ve informed Lenovo as well.

I have the following:

1.Lenovo ThinkPad OneLink+ to RJ45 Adapter ( p/n: SC10J34224BB FRU: 00JT801 )
2.Lenovo ThinkPad USB 3.0 Ethernet Adapter ( p/n: SC10H30171/RTL8153 FRU: 03X6903 )
3.Lenovo USB-C to Ethernet Adapter ( p/n: SC10L66919/RTL8153-04 FRU: 03X7205 )

All three work as desired on a Lenovo ThinkPad 13 (20GKSOA700 BIOS 1.24) for both Legacy and UEFI network boot. I also tested 1&2 on a Lenovo Yoga 260 (20FES0VJ00 BIOS 1.59) successfully.

Since there isn’t a OneLink+ connector on a Yoga 370 (1.17) here are my findings for the two USB models.

2a. Using the Lenovo ThinkPad USB 3.0 Ethernet Adapter ( p/n: SC10H30171/RTL8153 FRU: 03X6903 )

• Legacy mode (no secure boot, CSM, Legacy only)
• Selecting PCI LAN > Realtek PXE B000 D14
• PXE boots okay, FOS environment hands off successfully and process succeeds

2b. Using the Lenovo ThinkPad USB 3.0 Ethernet Adapter ( p/n: SC10H30171/RTL8153 FRU: 03X6903 )

• UEFI mode (no secure boot, no CSM, UEFI only)
• Selecting PCI LAN > Thinkpad USB LAN-IPv4
• PXE boots okay, but FOS environment then hangs on black screen after loading their inits for performing the selected action

3a. Using the Lenovo USB-C to Ethernet Adapter ( p/n: SC10L66919/RTL8153-04 FRU: 03X7205 )

• Legacy mode (no secure boot, CSM, Legacy only)
• Selecting PCI LAN > IBA CL Slot 00FE v0109
• Attempts to PXE boot but fails with: PXE-E61: Media test failure, check cable ; PXE-M0F: Exiting Intel Boot Agent.

3b. Using the Lenovo USB-C to Ethernet Adapter ( p/n: SC10L66919/RTL8153-04 FRU: 03X7205 )

• UEFI mode (no secure boot, no CSM, UEFI only)
• Selecting PCI LAN > Intel Gigabit 0.0.18-IPv4
• goes directly to a blank screen for 5 seconds then returns to the F12 boot menu

There is clearly something amiss with the 370’s code.

Lenovo says that the 4X90E51405 should work, but I don’t have one … yet 8).

[Sebastian Roth]

@sudburr Nice, thanks a lot for testing and posting all those many details here!!

Do you think you can squeeze in another short test to capture a packet dump for us to look at? Run tcpdump -w output.pcap host x.x.x.x and port 80 on the server, and boot up the client. When it hangs jst quit tcpdump (Ctrl-C), upload and post a link here.

[sudburr]

Lenovo is shipping me a 4X90E51405 for testing. I hope to be back into testing it soon.

[sudburr]

Alrighty then, I have successfully UEFI and Legacy network booted a Lenovo ThinkPad Yoga 370 (20JJS2F200) with BIOS 1.17 using a Lenovo Mini-Ethernet Extension Adapter (p/n: sc10a39882aa, fru: 04x6435)

Yay another proprietary interface! (here’s the modern version).

[Sebastian Roth]

@sudburr Thanks for testing! So does that mean you don’t see the same issue (hang on init.xz) that was reported initially?

[sudburr]

That’s right. It works exactly as desired.

[Sebastian Roth]

@sudburr You still have the other USB NIC adapters by any chance? Would you give those a try as well?

[sudburr]

I already tested the others (see above) with the same BIOS and fog server configuration (1.4.4 / 4.12.3).

[Sebastian Roth]

@sudburr Sorry, didn’t figure you had tested those on that very same model. Now I got it.

So that means the issue is gone. Most probably because of a new hardware release or firmware version?!?

[sudburr]

No. Nothing changed on the laptop.

To get past the inits in UEFI network boot I had to use the Lenovo Mini-Ethernet Extension Adapter ( p/n: sc10a39882aa, fru: 04x6435 ) that I just acquired.

To get past the inits in Legacy network booting I can use the Lenovo ThinkPad USB 3.0 Ethernet Adapter ( p/n: SC10H30171/RTL8153 FRU: 03X6903 ) or the Lenovo Mini-Ethernet Extension Adapter ( p/n: sc10a39882aa, fru: 04x6435 ) that I just acquired.

All tests were conducted with BIOS 1.17 and fog server configuration (1.4.4 / 4.12.3).

[Sebastian Roth]

@sudburr Ok, thank you very much again for all the tests and detailed information! So I mark this solved (on my todo list) now.

Hope that all the other Yoga 370 users out there find this!

[sudburr]

I can now confirm that the Lenovo Mini-Ethernet Extension Adapter (p/n: sc10a39882bb, fru: 04x6435) also works in both UEFI and Legacy network boot.