[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Only one CPU core detected when booting on UEFI
>>> On 17.12.12 at 03:07, Xiao-Long Chen <chenxiaolong@xxxxxxxxxxx> wrote: > Hi Xen developers, > > I have been having a problem where only one CPU core is being detected. > I'm using a Lenovo W520 with a UEFI firmware and an Intel Core i7 > 2720qm (4 real cores, 4 virtual cores). When I boot, I see > "Dom0 has maximum 1 VCPUs", or something similar, scroll by. > > In addition, only 10 GB out of my 12 GB of memory is recognized and > ACPI is not working properly (CPU frequency scaling and battery info > are not reported). > > This problem has been reported before (for the same laptop too) here: > http://lists.xen.org/archives/html/xen-devel/2012-06/msg00087.html but > unfortunately, the person who sent the message didn't reply with more > information. And the solution had already been discussed on the list too - depending on how you do things currently (not judgeable from the incomplete set of logs you provided), switch to using xen.efi rather than booting through GrUB2, and/or use a kernel that is actually EFI-capable (the upstream one continues to require out of tree patches). Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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