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
This bug was fixed in the package linux - 4.2.0-27.32
---
linux (4.2.0-27.32) wily; urgency=low
[ Brad Figg ]
* Release Tracking Bug
- LP: #1536867
[ Andy Whitcroft ]
* SAUCE: (no-up) add compat_uts_machine= kernel command line override
- LP: #1520627
[ Colin
This bug was fixed in the package linux - 4.4.0-2.16
---
linux (4.4.0-2.16) xenial; urgency=low
[ Andy Whitcroft ]
* Release Tracking Bug
- LP: #1539090
* SAUCE: hv: hv_set_ifconfig -- convert to python3
- LP: #1506521
* SAUCE: dm: introduce a target_ioctl op to
This bug was fixed in the package linux - 3.19.0-49.55
---
linux (3.19.0-49.55) vivid; urgency=low
[ Brad Figg ]
* Release Tracking Bug
- LP: #1536775
[ Colin Ian King ]
* SAUCE: (no-up) ACPI / tables: Add acpi_force_32bit_fadt_addr option to
force 32 bit FADT
Verified on Wily
Steps used:
1. Hacked seabios to extend FADT to include 64 bit X_* PM registers which
pointed to garbage address
2. Boot vivid QEMU VM with old kernel and modified (broken) BIOS
3. Observe kernel failures
4. Install new kernel (4.2.0-27-generic) #32 (Jan 22)
5. Add
Verified on Vivid.
Steps used:
1. Hacked seabios to extend FADT to include 64 bit X_* PM registers which
pointed to garbage address
2. Boot vivid QEMU VM with old kernel and modified (broken) BIOS
3. Observe kernel failures
4. Install new kernel (3.19.0.49-generic) #55 (Jan 22)
5. Add
I added the "proposed" source and from there installed kernel 3.19.0-46
(using Synaptic). Booted with acpi_force_32bit_fadt_addr and system
froze.
I get the feeling this kernel wasn't the one I was supposed to be
testing with. Could it be because I am on Trusty? Is the proposed kernel
released to
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
wily' to 'verification-done-wily'.
If verification is not done by 5 working days from
This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
vivid' to 'verification-done-vivid'.
If verification is not done by 5 working days from
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 - >
So it's highly likely that the 64 bit addresses used for specific PM
registers are wrong in the FADT, where as they are correct in the 32 bit
addresses.
The FADT supports old 32 bit legacy addressing for PM registers and 64
bit addressing too. Unfortunately sometimes the firmware sets the 64
bit
I have prepared a kernel based on Ubuntu-3.19.0-26.27 with just commit
19114b5458510b757cd2801e64094e4062e4067f (see comment #25) reverted. If
someone could test that and confirm just the indicated commit reverted
is enough to fix this:
http://people.canonical.com/~apw/lp1529381-vivid/
Hi, i have exact same problem on my hp compaq 6715s.
Today, i got help from a developer nick-named "apw", who dwells in
#ubuntu-kernel channel on Freenode network. He produced a kernel based on
3.19.0-26.27 with just the commit removed and it BOOTED SUCCESSFULLY!
Here's the link of the modified
Developers on #ubuntu-kernel helped me a lot to identify the problem, so here's
our conversation log:
http://irclogs.ubuntu.com/2016/01/21/%23ubuntu-kernel.html
You should scroll down to my nickname peaceful.
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Hi, i have exact same problem on my hp compaq 6715s.
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https://bugs.launchpad.net/bugs/1529381
Title:
[HP Compaq 6715s] Updating kernel renders system unbootable
To manage
** Tags added: kernel-da-key
** Also affects: linux (Ubuntu Vivid)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Xenial)
Importance: High
Status: Triaged
** Also affects: linux (Ubuntu Wily)
Importance: Undecided
Status: New
** Changed in: linux
I'm currently working on an override kernel parameter, I hope to get a
kernel for you to test later today
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Title:
[HP Compaq 6715s] Updating
I've uploaded some 3.19 kernels (i386, 32 bit), (amd64, 64 bit) to:
http://kernel.ubuntu.com/~cking/lp-1529381/
First, edit /etc/default/grub and change the line:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
and add "acpi_force_32bit_fadt_addr", e.g.
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash
Thanks a lot Colin! My laptop now boots this kernel with
"acpi_force_32bit_fadt_addr" override kernel parameter.
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Title:
[HP Compaq 6715s]
** 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
** Changed in: linux (Ubuntu Vivid)
Status: In Progress => Fix Committed
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Title:
[HP Compaq 6715s] Updating kernel renders system
** Changed in: linux (Ubuntu Wily)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Fix Committed
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My post to the developers:
http://marc.info/?l=linux-acpi=145186512903943=2
Reply:
http://marc.info/?l=linux-acpi=145191133113281=2
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Title:
Bug submitted to bugzilla.kernel.org as per developer instructions:
https://bugzilla.kernel.org/show_bug.cgi?id=110451
** Bug watch added: Linux Kernel Bug Tracker #110451
http://bugzilla.kernel.org/show_bug.cgi?id=110451
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