For reference: http://www.uefi.org/sites/default/files/resources/ACPI_6.0.pdf, section 5.2.9 Fixed ACPI Description Table (FADT), see the 32 bit PM registers (PM1a_EVT_BLK etc) and their 64 bit counterparts (X_PM1a_EVT_BLK etc).
You can check if these are sane by running "sudo fwts acpidump - > dump.log" and then checking if the 32 bit and 64 bit variants of the PM registers are different. The kernel will default to using the 64 bit variants with the faulty patch. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1529381 Title: [HP Compaq 6715s] Updating kernel renders system unbootable Status in linux package in Ubuntu: Triaged Bug description: To reproduce (on this hardware) 1) Install 14.04.3 LTS (Ubuntu or XUbuntu) 2) Install updates 3) Reboot The kernel used after update is 3.19.0-42. Booting with the kernel that came with the install image (3.19.0-25) works fine. This computer is a HP Compaq 6715s. I have looked at HPs support pages for BIOS updates for this model but none was available. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.19.0-42-generic 3.19.0-42.48~14.04.1 ProcVersionSignature: Ubuntu 3.19.0-25.26~14.04.1-generic 3.19.8-ckt2 Uname: Linux 3.19.0-25-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 CurrentDesktop: XFCE Date: Sat Dec 26 16:36:30 2015 InstallationDate: Installed on 2015-12-26 (0 days ago) InstallationMedia: Xubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) SourcePackage: linux-lts-vivid UpgradeStatus: No upgrade log present (probably fresh install) --- ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: XFCE DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=522810df-638a-412b-9aab-791e2e2bc545 InstallationDate: Installed on 2015-12-26 (0 days ago) InstallationMedia: Xubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) MachineType: Hewlett-Packard HP Compaq 6715s (RU655ET#AK8) Package: linux (not installed) PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-25-generic root=UUID=0dd333f9-6172-41eb-9472-a321d48c04eb ro quiet splash ProcVersionSignature: Ubuntu 3.19.0-25.26~14.04.1-generic 3.19.8-ckt2 RelatedPackageVersions: linux-restricted-modules-3.19.0-25-generic N/A linux-backports-modules-3.19.0-25-generic N/A linux-firmware 1.127.19 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: trusty Uname: Linux 3.19.0-25-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo WifiSyslog: Dec 27 13:38:38 michael wpa_supplicant[815]: wlan1: CTRL-EVENT-SCAN-STARTED _MarkForUpload: True dmi.bios.date: 03/26/2007 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68YTT Ver. F.03 dmi.board.name: 30C2 dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 71.21 dmi.chassis.asset.tag: CNU7201T8J dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68YTTVer.F.03:bd03/26/2007:svnHewlett-Packard:pnHPCompaq6715s(RU655ET#AK8):pvrF.03:rvnHewlett-Packard:rn30C2:rvrKBCVersion71.21:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP Compaq 6715s (RU655ET#AK8) dmi.product.version: F.03 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1529381/+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
