Hi I've installed CentOS 5.2 (i386) in a computer with a DG33BU motherboard ... When I installed it it crashed because of ACPI issues. Searching Google I found that I need to turn ACPI off in order to successfully install CentOS, which I did. After a while I noticed that because of ACPI is off the Linux kernel finds, initializes and uses only 1 CPU core in the Q6600 quad core CPU that is installed in this computer :-( How can I force it to find, initialize and use all the 4 cores in the computer even if ACPI is off? -- TIA Paolo -------------- next part -------------- An HTML attachment was scrubbed... URL: <lists.centos.org/pipermail/centos/attachments/20090203/17d93b18/attachment.html>
On Tuesday 03 February 2009, Paolo Supino wrote:> Hi > > I've installed CentOS 5.2 (i386) in a computer with a DG33BU motherboard > ... When I installed it it crashed because of ACPI issues. Searching Google > I found that I need to turn ACPI off in order to successfully install > CentOS, which I did. > After a while I noticed that because of ACPI is off the Linux kernel > finds, initializes and uses only 1 CPU core in the Q6600 quad core CPU that > is installed in this computer :-( > How can I force it to find, initialize and use all the 4 cores in the > computer even if ACPI is off?Try to leave ACPI on and boot with "pci=nommconf" instead. This works on my DG33 (mine is a TL not a BU though). /Peter -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part. URL: <lists.centos.org/pipermail/centos/attachments/20090203/99f2bf5d/attachment.sig>
Paolo Supino wrote:> Hi > > I've installed CentOS 5.2 (i386) in a computer with a DG33BU > motherboard ... When I installed it it crashed because of ACPI issues. > Searching Google I found that I need to turn ACPI off in order to > successfully install CentOS, which I did. > After a while I noticed that because of ACPI is off the Linux kernel > finds, initializes and uses only 1 CPU core in the Q6600 quad core CPU > that is installed in this computer :-( > How can I force it to find, initialize and use all the 4 cores in the > computer even if ACPI is off?you might check to see if there's a BIOS update on support.intel.com and flash that, as ACPI uses tables in the flash bios to describe the hardware. Intel is pretty good about fixing stuff like this. downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&Inst=Yes&ProductID=2780&DwnldID=17260&strOSs=All&OSFullName=All Operating Systems&lang=eng indeed, the latest BIOS for that board is 0517 (DPP3510J.86A.0517.2009.0107.2203), and there is a fairly extensive list of bugfixes in the release notes downloadmirror.intel.com/17260/eng/DP_0517_ReleaseNotes.pdf do read the readme on the flash processes, there are 5 files, you only need the right one for the method you want to use to flash it. downloadmirror.intel.com/17260/eng/BIOS Update Readme.pdf