On Monday, December 12, 2011 02:50:49 AM Cristian Rodríguez wrote:
On 11/12/11 22:46, Thomas Renninger wrote:
commit c1c0cfd66da3cd5dd779d0fb24384fa497488ea7 Author: Thomas Renninger<trenn@suse.de> Date: Mon Dec 12 02:34:32 2011 +0100
x86, x2apic: Enable the bios request for x2apic optout. Thomas
Ok, thank you :-) but after some extra testing, only when either noapic or acpi=noirq is used the machine *works* reliable, it boots correctly with nox2apic but after a few minutes the wifi adapter hangs with backtrace posted earlier.
Quick googling revealed: New Dell XPS 15z (L511z) Wireless Card Issues http://en.community.dell.com/support-forums/laptop/f/3518/p/19382502/2000021... and: https://wiki.ubuntu.com/HardwareSupport/Machines/Laptops/Dell/XPS/15z#Wirele... there they state wireless working, maybe it's the additional pcie_aspm param: pcie_aspm=force acpi=noirq i915.semaphores=1 To be honest: I would send it back if you still can. Get an HP, best pre-loaded with SLE11 SP1 (soon with SP2 and a recent 3.0 kernel, afaik latest models can get upgraded and still have support, but I don't know for sure). You would not have to pay the Windows license if you don't need it and you would have a well tested system. If something should really not work, you have full support and HP generally cares about making their BIOS work with Linux. I have one and every single piece of HW works like a charme out of the box. Here another example where lacking Linux vendor support, again Dell, "is not nice" (I better avoid too harsh words on a public list): It's about not being able to reboot and the blacklist is full of Dell machines: http://www.gossamer-threads.com/lists/linux/kernel/1450309 Let me paste the important parts of the thread:
It's a bug in the SMM code on these machines, and it goes away if you disable VT-D. Let's try to actually fix it How do you intend to fix that? From description above it sounds as if this problem is not fixable from OS side.
Tear down VT-D state before reboot. But doing this for all X86 machines because of a handful of Dells with broken SMM code sounds wrong as well.
Doesn't Dell ship with Ubuntu pre-loaded? Can't someone point them to this to get this fixed in BIOS?
I've been trying. ... Thomas -- To unsubscribe, e-mail: opensuse-kernel+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-kernel+owner@opensuse.org