No problem about the aspera confusion. I can now confirm that installing http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-rc3-precise/linux-image-3.4.0-030400rc3-generic-pae_3.4.0-030400rc3.201204152235_i386.deb has completely addressed the original issue. It is a final fix. My hp nc6400 now operates correctly (no kernel freeze) while on battery power. This is the first and (so far) only fix I have seen, after several years of searching for a solution!
I may try 3.4-rc4 at a later point. I'm happy to have a fully portable laptop for now. Many thanks for the idea, -jmsj On Tue, Apr 24, 2012 at 02:33, Jost Menke <898...@bugs.launchpad.net> wrote: > @Jason St. JohnComp: I copied a comment from bug #656745 where I replied > to a person named "aspera", sorry for the confusion. Bug #656745 seems > to be sort of a duplicate to this one. Anyway, thanks for your feedback. > So kernel 3.4 seems to be an improvent for you, but no final fix. In the > meantime, RC4 is out, maybe you want to give it a try: > http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.4-rc4-precise/ > > PS: Just to make this clear: I am not involved in any patches or kernel > development, I only had the idea to try out the mainline 3.4 kernel. > > @Christopher M. Penalver: > Kernel 3.4 fixes the problem on my HP nx7400, after several days of testing I > can say that I am sure about this, no more freezes in the meantime. ATM I am > running 3.4 RC4 on Ubuntu 12.04. Too bad 3.4 won't make it into the official > release of 12.04. So the question is, is there a way to find out what causes > the freezes and backport the stuff needed to kernel 3.2? > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/898852 > > Title: > Kernel freeze when on battery - Compaq nc6400 > > Status in “linux” package in Ubuntu: > Incomplete > > Bug description: > When the system is on battery, it freeze randomly (mean time 15 minutes). > Everything including the move get frozen, however it SysRq key works. > > Please find attached some info taken on the netconsole: the cpu- > backtrace, and some complaints from processes. > > I can see that the both CPU are blocked in > acpi_idle_enter_bm+0x227/0x25e > > With which version of the kernel do you want me to retry the catch the > bug. > > ProblemType: Bug > DistroRelease: Ubuntu 11.10 > Package: linux-image-3.0.0-14-generic 3.0.0-14.23 > ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9 > Uname: Linux 3.0.0-14-generic i686 > AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. > ApportVersion: 1.23-0ubuntu4 > Architecture: i386 > AudioDevicesInUse: > USER PID ACCESS COMMAND > /dev/snd/controlC0: ecastro 1806 F.... pulseaudio > CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type > Card0.Amixer.info: > Card hw:0 'Intel'/'HDA Intel at 0xf4780000 irq 45' > Mixer name : 'Analog Devices AD1981' > Components : 'HDA:11d41981,103c30ad,00100200 > HDA:11c13026,103c30ad,00100700' > Controls : 13 > Simple ctrls : 11 > Date: Fri Dec 2 00:01:58 2011 > HibernationDevice: RESUME=UUID=d2bd385c-02de-48e5-91b7-f63b7f68c50e > InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) > PccardctlIdent: > Socket 0: > no product info available > PccardctlStatus: > Socket 0: > no card > ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-14-generic > root=UUID=c8df4b1a-be0c-47fe-adac-fdfb649e8618 ro > crashkernel=384M-2G:64M,2G-:128M debug ignore_loglevel > RelatedPackageVersions: > linux-restricted-modules-3.0.0-14-generic N/A > linux-backports-modules-3.0.0-14-generic N/A > linux-firmware 1.60 > SourcePackage: linux > UpgradeStatus: No upgrade log present (probably fresh install) > dmi.bios.date: 04/17/2007 > dmi.bios.vendor: Hewlett-Packard > dmi.bios.version: 68YCU Ver. F.0A > dmi.board.name: 30AD > dmi.board.vendor: Hewlett-Packard > dmi.board.version: KBC Version 56.34 > dmi.chassis.type: 10 > dmi.chassis.vendor: Hewlett-Packard > dmi.modalias: > dmi:bvnHewlett-Packard:bvr68YCUVer.F.0A:bd04/17/2007:svnHewlett-Packard:pn:pvrF.0A:rvnHewlett-Packard:rn30AD:rvrKBCVersion56.34:cvnHewlett-Packard:ct10:cvr: > dmi.product.version: F.0A > dmi.sys.vendor: Hewlett-Packard > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/898852/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/898852 Title: Kernel freeze when on battery - Compaq nc6400 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/898852/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
