The AMD microcode coming from linux-firmware - 1.79.6 is freezing 99% of the times my 5 Dell PowerEdge M915 blades (4x64 Cores Opteron 6274, currently with 3.0.4 BIOS).
This happens both at boot and also if I blacklist the 'microcode' module and then I run 'modprobe microcode' after the system is up. To have always a successful boot I had to blacklist the microcode module. ############################################### Description: Ubuntu 12.04.3 LTS Release: 12.04 Linux marley 3.8.0-31-generic #46~precise1-Ubuntu SMP Wed Sep 11 18:21:16 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux ############################################### root@marley:~# dpkg -S /lib/firmware/amd-ucode/microcode_amd* linux-firmware: /lib/firmware/amd-ucode/microcode_amd.bin linux-firmware: /lib/firmware/amd-ucode/microcode_amd.bin.asc linux-firmware: /lib/firmware/amd-ucode/microcode_amd_fam15h.bin linux-firmware: /lib/firmware/amd-ucode/microcode_amd_fam15h.bin.asc ############################################### root@marley:~# apt-cache show linux-firmware Package: linux-firmware Priority: optional Section: misc Installed-Size: 41502 Maintainer: Ubuntu Kernel Team <kernel-t...@lists.ubuntu.com> Architecture: all Version: 1.79.6 Replaces: atmel-firmware, linux-restricted-common Provides: atmel-firmware Conflicts: atmel-firmware Filename: pool/main/l/linux-firmware/linux-firmware_1.79.6_all.deb Size: 23217718 MD5sum: b774085d0ad3bb87bdf60b9590df1ba6 SHA1: 89ce403513450402be1190659ddbe1c9ed9db54e SHA256: 5945561ab9bffbf9d91d618bf9fe5862b9d42abdff797429bc75b8d034b7fb28 Description-en: Firmware for Linux kernel drivers This package provides firmware used by Linux kernel drivers. Multi-Arch: foreign Description-md5: 7a047bff9e44dce458a300976c12f9da Bugs: https://bugs.launchpad.net/ubuntu/+filebug Origin: Ubuntu Supported: 5y ############################################### dmidecode attached ** Attachment added: "dmidecode.log" https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1200533/+attachment/3879282/+files/dmidecode.log -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1200533 Title: Please update AMD ucode/microcode in linux-firmware Status in “linux-firmware” package in Ubuntu: Fix Released Status in “linux-firmware” source package in Precise: Fix Released Status in “linux-firmware” source package in Saucy: Fix Released Bug description: Updated AMD-ucode has has just landed on kernel.org Please update amd-ucode in linux-firmware https://git.kernel.org/cgit/linux/kernel/git/firmware/linux- firmware.git/commit/?id=31f6b3076bab3c4b65f67fdb232f4579ed828b4f Files: amd-ucode/microcode_amd.bin amd-ucode/microcode_amd_fam15h.bin The ucode used to be available here: http://www.amd64.org/support/microcode.html before the site went down last year. This AMD ucode fixes some severe lockup issues on AMD family 15h CPUs when under high load. The fix for erratum #759 being the most severe. Example thread discussing the lockup issues of #759: http://communities.vmware.com/thread/432033?start=30&tstart=0 Dell + others have already updated BIOS updated microcode: http://www.dell.com/support/drivers/au/en/19/DriverDetails?driverId=HPP5C To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1200533/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
