** Description changed:
+ [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
+ Socket 0:
+ no product info available
PccardctlStatus:
- Socket 0:
- no card
+ 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
+ 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
+ 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
** Changed in: linux (Ubuntu Vivid)
Assignee: (unassigned) => Colin Ian King (colin-king)
** Changed in: linux (Ubuntu Wily)
Assignee: (unassigned) => Colin Ian King (colin-king)
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => Colin Ian King (colin-king)
** Changed in: linux (Ubuntu Vivid)
Status: Triaged => In Progress
** Changed in: linux (Ubuntu Xenial)
Status: Triaged => In Progress
** Changed in: linux (Ubuntu Wily)
Status: Triaged => In Progress
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https://bugs.launchpad.net/bugs/1529381
Title:
[HP Compaq 6715s] Updating kernel renders system unbootable
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