14z: UEFI boot hangs at purple screen if NIC activated

Asked by mlaverdiere on 2012-12-24

Here is some feedback related to running Ubuntu 12.10 64 bits on an Dell Inspiron 14z with an integrated NIC Atheros 8162 (instead of 8152).

Everything works quite well, except that I can't boot Ubuntu on UEFI mode if the AR8162 card is enabled in BIOS, as it will hang in a blank purple screen or, in recovery mode, at "loading initial ramdisk". If the AR8162 card is disabled, it will boot just fine.

What is strange is that I'm able to boot the same Ubuntu installation in legacy mode with the AR8162 enabled in BIOS and this card is working just fine with the alx module available in compat-wireless package (see: http://askubuntu.com/questions/157223/12-04-does-not-detect-eth0atheros-ar8162/231715#231715).

See this bug report: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1093472

Any idea?

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Ubuntu-Certification Edit question
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Jeff Lane (bladernr) said : #1

Hi, since the version that Dell asked us to certify was the version with the 8152 NIC, there's not a lot I can tell you. That being said, UEFI support is a bit dodgy in 12.04 and 12.10, but should be a LOT better by 13.04 and 12.04.2, I hope.

I would normally suggest you file a bug for this, but you already have so you're ahead of me there :)

In most cases, legacy mode is the best way to go. Otherwise, there seem to be a rash of strange issues from what you're seeing to problems with PXE and other issues. As I said, those are mostly being worked out now and should be fixed in the future though.

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