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Message #162113
[Bug 1529381] Re: [HP Compaq 6715s] Updating kernel renders system unbootable
This fix recently landed in linux-next,
abef9ca9ff7dacb77603b2c0976e29423efded39 so should be supported in forth
coming kernel releases (4.6+)
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https://bugs.launchpad.net/bugs/1529381
Title:
[HP Compaq 6715s] Updating kernel renders system unbootable
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Vivid:
Fix Released
Status in linux source package in Wily:
Fix Released
Status in linux source package in Xenial:
Fix Released
Bug description:
[SRU Justification][Vivid][Wily]
The kernel by default is now using 64 bit addresses from the FADT,
however, some firmware has legacy 32 bit addresses that are correct
and 64 bit addresses that are buggy and incorrect. This results in
some machines breaking on boot.
[Fix]
Add a workaround kernel parameter that forces ACPI to use the 32 bit addresses from the FADT
[Testcase]
Without the fix, machine won't boot. With the fix add "acpi_force_32bit_fadt_addr" to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub, roll in the kernel and it will boot
[Regression potential]
This fix only twiddles the ACPI global variable acpi_gbl_use32_bit_fadt_addresses if the override flag is used on the kernel, so the regression potential is minimal as one has to force the flag to enable the feature.
------------------------------------
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
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