Re: [Bug 355155] Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
For those of you experiencing both overheating and sluggish/freezing behavior under DELL E-Series laptops (possibly also some D-Series), I finally discovered the whole thing could be explained by some heat pipe or fan-related issue that many of those laptops experience! See the subject: http://en.community.dell.com/forums/p/19247293/19398983.aspx So far, nothing seems to help (BIOS update etc), so it seems some of those laptops need to be send back to DELL for repair. Also, since the problems worsen with time, it is highly possible that those heat pipes are full of dust. This might help dividing this thread into people with real software issue and those with hardware problems experiencing the same symptoms. On Mon, Jul 6, 2009 at 11:13 PM, pierrro pierre.leje...@free.fr wrote: Hi, I have an AMD Athlon XP 3200+ (so only one core and only one processor) and I'm concerned by this bug: everything freezes, only a hard reboot can work. The frequency of my processor can go from 1 GHz to 2 GHz whith the Cool Quiet system of my ASUS A8N-SLI Deluxe mother board. I was having about 3 freezes a day whith this function enabled. Since le 26th of june, I have disabled this function and I had only 2 freezes since this time. According to this ans the messages above, I think that there is a problem with the precessor management. (Sorry for my bad english, I hope I have helped) -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a direct subscriber of the bug. Status in “linux” package in Ubuntu: Triaged Bug description: Ever since i installed jaunty, randomly my computer would just freeze, and even a alt+f1 or a alt+sysrq+reisub would not do anything, so i assume its a kernel problem. This just happened right now, and i had to restart my computer, so i ran 'ubuntu-bug linux' the second i restarted. Maybe it will provide some insight to the problem? ProblemType: Bug Architecture: i386 DistroRelease: Ubuntu 9.04 MachineType: System manufacturer P5Q-PRO NonfreeKernelModules: nvidia Package: linux-image-2.6.28-11-generic 2.6.28-11.40 ProcCmdLine: root=UUID=d9574ed9-a697-45be-b773-ad8a81d79b6b ro quiet splash vga=792 ProcEnviron: LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.28-11.40-generic SourcePackage: linux -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
@Vast One: I somehow came to the same conclusion yesterday! While trying to update my BIOS (which I never managed due to yet another ubuntu issue...anyways), I had to restart my computer quite often (Dell E6400). In doing so, the system froze, or at least went very slow, even before doing entering KDE (usually the problem appears with video playback under KDE), and it was impossible to make my computer work all night! I tried 2h and then realized the computer was extremely HOT! This morning everything is back to normal. @Manoj: Do you think this might be related to some power management issue or overheating/overclocking? So now, a way to reproduce the problem on my Dell E6400: hard reboot it every minute, then it will be hot and will freeze be slow after less than 60s uptime. Let me know if you need anything else. -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
I've tried many of those kernels from mainline (last in date 2.6.30) and they all prove buggy. What's more, with the time passing by and the new Intel drivers/Ubuntu kernels begin available, the problem is even more acute to my own experience, i.e. I can no longer watch a fullscreen (1440x960) video more than 2min before the computer stalls. -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 355155] Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
@Manoj: nope, same issue after 1min of video playback, my computer is heavily lagging... Manoj Iyer wrote: Can someone please try the kernel in http://people.ubuntu.com/~manjo/lp355155-jaunty/ and report if that fixes the problem ? -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 355155] Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
@Manoj, My system does not freeze as such, but it becomes quickly very very slow until it finally freezes if I keep running heavy applications (heavy = mplayer in full screen...). My video card is: VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) (as already mentioned, the problem got even worse with the last driver versions, e.g. 2:2.6.3-0ubuntu9 or currently: 2:2.7.99.901+git20090615.3da549f5-0ubuntu0sarvatt~jaunty) When the problem occurs (perceptibly at least it, when the system slows down), the first symptoms appear in the dmesg as: CE: hpet increasing min_delta_ns to 15000 nsec CE: hpet increasing min_delta_ns to 22500 nsec at this point, everything is so slow I have to hard reboot. I'll try some of the options suggested in the WiKi. Manoj Iyer wrote: Sir Romanov, are you able to ssh to your system after it freezes ? Can you please take a look at this wiki page and see if your video card falls in this category ? https://wiki.ubuntu.com/X/Troubleshooting/Freeze https://wiki.ubuntu.com/X/Bugs/IntelDriver -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 355155] Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
Just for the Ubuntu developers and maintainers to know... thanks to their lack of responsivity, I also join the Ubuntu to ArchLinux trend. On Sun, Jun 7, 2009 at 1:52 AM, Polygon auroraborea...@adelieland.euwrote: i don't have an intel card, nor do i have those lines added furthermore, i am fed up with the lack of a single response from any ubuntu developer, or really anyone who knows anything about the kernel. Heck, no one has even triaged this bug yet. I was tired of my computer crashing whenever i was doing something important or time consuming, so i have moved to arch. I shall still try to answer any questions though. -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a direct subscriber of the bug. Status in “linux” source package in Ubuntu: Confirmed Bug description: Ever since i installed jaunty, randomly my computer would just freeze, and even a alt+f1 or a alt+sysrq+reisub would not do anything, so i assume its a kernel problem. This just happened right now, and i had to restart my computer, so i ran 'ubuntu-bug linux' the second i restarted. Maybe it will provide some insight to the problem? ProblemType: Bug Architecture: i386 DistroRelease: Ubuntu 9.04 MachineType: System manufacturer P5Q-PRO NonfreeKernelModules: nvidia Package: linux-image-2.6.28-11-generic 2.6.28-11.40 ProcCmdLine: root=UUID=d9574ed9-a697-45be-b773-ad8a81d79b6b ro quiet splash vga=792 ProcEnviron: LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.28-11.40-generic SourcePackage: linux -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
@RedSocrates: No, sorry... does not work for me. The TSC messages are indeed not issued, neither are btw the hpet increasing errors, but the system still stalls after a while. I now have a systematic way to make it stall... 10min of high resolution (1920x1440) video playback of some movie (dunno why this one is so sensitive!). So now I can try all your suggestions in around 15min. Btw, has anyone tried some alternative distro and can confirm for sure they do not have this issue? Debian Lenny/Squeeze? Fedore 10/11? -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
I have a reproducible pattern: on kernel 2.6.30-rc6, I get these [0.881484] rtc_cmos 00:03: setting system clock to 2009-05-23 19:56:41 UTC (1243108601) [0.881545] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found [0.881597] EDD information not available. [1.49] Clocksource tsc unstable (delta = -112215141 ns) everytime ONE second after boot. I attach lscpi, and a complete dmeg. The patterns are highly similar : May 23 10:21:14 laptop kernel: [0.881659] rtc_cmos 00:03: setting system clock to 2009-05-23 08:20:35 UTC (1243066835) May 23 10:21:14 laptop kernel: [0.881720] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found May 23 10:21:14 laptop kernel: [0.881772] EDD information not available. May 23 10:21:14 laptop kernel: [1.000146] Clocksource tsc unstable (delta = -112013565 ns) -- May 23 11:13:47 laptop kernel: [0.877902] rtc_cmos 00:03: setting system clock to 2009-05-23 09:13:06 UTC (1243069986) May 23 11:13:47 laptop kernel: [0.877963] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found May 23 11:13:47 laptop kernel: [0.878014] EDD information not available. May 23 11:13:47 laptop kernel: [1.000223] Clocksource tsc unstable (delta = -116434829 ns) -- May 23 20:32:25 laptop kernel: [0.898544] rtc_cmos 00:03: setting system clock to 2009-05-23 18:31:46 UTC (1243103506) May 23 20:32:25 laptop kernel: [0.898605] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found May 23 20:32:25 laptop kernel: [0.898652] EDD information not available. May 23 20:32:25 laptop kernel: [1.94] Clocksource tsc unstable (delta = -87870418 ns) -- May 23 21:57:21 laptop kernel: [0.881484] rtc_cmos 00:03: setting system clock to 2009-05-23 19:56:41 UTC (1243108601) May 23 21:57:21 laptop kernel: [0.881545] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found May 23 21:57:21 laptop kernel: [0.881597] EDD information not available. May 23 21:57:21 laptop kernel: [1.49] Clocksource tsc unstable (delta = -112215141 ns) ** Attachment added: dmesg and lspci -v http://launchpadlibrarian.net/27097538/dmesg-lspci.tar -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
I have a reproducible pattern: on kernel 2.6.30-rc6, I get these [0.881484] rtc_cmos 00:03: setting system clock to 2009-05-23 19:56:41 UTC (1243108601) [0.881545] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found [0.881597] EDD information not available. [1.49] Clocksource tsc unstable (delta = -112215141 ns) everytime ONE second after boot. I attach lscpi, and a complete dmesg. The patterns are highly similar : May 23 10:21:14 laptop kernel: [0.881659] rtc_cmos 00:03: setting system clock to 2009-05-23 08:20:35 UTC (1243066835) May 23 10:21:14 laptop kernel: [0.881720] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found May 23 10:21:14 laptop kernel: [0.881772] EDD information not available. May 23 10:21:14 laptop kernel: [1.000146] Clocksource tsc unstable (delta = -112013565 ns) -- May 23 11:13:47 laptop kernel: [0.877902] rtc_cmos 00:03: setting system clock to 2009-05-23 09:13:06 UTC (1243069986) May 23 11:13:47 laptop kernel: [0.877963] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found May 23 11:13:47 laptop kernel: [0.878014] EDD information not available. May 23 11:13:47 laptop kernel: [1.000223] Clocksource tsc unstable (delta = -116434829 ns) -- May 23 20:32:25 laptop kernel: [0.898544] rtc_cmos 00:03: setting system clock to 2009-05-23 18:31:46 UTC (1243103506) May 23 20:32:25 laptop kernel: [0.898605] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found May 23 20:32:25 laptop kernel: [0.898652] EDD information not available. May 23 20:32:25 laptop kernel: [1.94] Clocksource tsc unstable (delta = -87870418 ns) -- May 23 21:57:21 laptop kernel: [0.881484] rtc_cmos 00:03: setting system clock to 2009-05-23 19:56:41 UTC (1243108601) May 23 21:57:21 laptop kernel: [0.881545] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found May 23 21:57:21 laptop kernel: [0.881597] EDD information not available. May 23 21:57:21 laptop kernel: [1.49] Clocksource tsc unstable (delta = -112215141 ns) ** Attachment added: dmesg and lspci -v http://launchpadlibrarian.net/27097579/dmesg-lspci.tar -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Clocksource tsc unstable leads to lockups in Ubuntu Jaunty
@Polygon: Seems to me like a kernel issue indeed... Even if other distros do not suffer the consequences of this TSC instability, I would be surprised this is issued 1 second after boot by anything else but the kernel itself! So this must be reported indeed. If you wish to send a report, I'll follow your lead! -- Clocksource tsc unstable leads to lockups in Ubuntu Jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 352373] Re: [jaunty] System randomly freezes
I think this is a duplicate of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/355155 In my case, I have those [0.00] Fast TSC calibration using PIT [0.145055] checking TSC synchronization [CPU#0 - CPU#1]: passed. [0.778058] Marking TSC unstable due to TSC halts in idle [1.000176] Clocksource tsc unstable (delta = -116420021 ns) straight after boot... and after a while, provided that I am a big too aggressive with my computer (e.g. 20min of fullscreen video... not so aggressive init?), I get those: [ 3996.237102] CE: hpet increasing min_delta_ns to 15000 nsec [ 4026.248042] CE: hpet increasing min_delta_ns to 22500 nsec and then it's all slow and I have to reboot... slow both in KDE or under a terminal... Can anyone else confirm Karmic does no longer have this issue? I do not feel like moving to an alpha version... Also, has anyone tried 2.6.30-rc6 ? (-rc5 ain't working) -- [jaunty] System randomly freezes https://bugs.launchpad.net/bugs/352373 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 270798] Re: lockups with default (hpet) clocksource on 2.6.27-2-generic 64-bit
Same problem here, typically happens after around 20min of fullscreen Video Playback, sometimes even before KDM is launched. Some people say this might be caused by WiFi modules (especially on Broadcom 43xx cards) and suggest to append blacklist b43 to /etc/modprobe.d/blacklist. Some say this might be linked to power management (hence the acpi=none and nolapic suggestions)... Is anyone really working on this subject? For me this is MAJOR and not MEDIUM problem, since the computer has to be restarted every 30min and sometimes does not even go to KDM before stalling! This must be a replicate of: https://bugs.launchpad.net/bugs/355155 -- lockups with default (hpet) clocksource on 2.6.27-2-generic 64-bit https://bugs.launchpad.net/bugs/270798 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Computer hard locks randomly with ubuntu jaunty
@Chem. Imbalance, That is indeed a shame to move from a supposedly stable Ubuntu to an alpha Fedora distro! But this would mean this is no direct kernel issue then... this really has to be figured out ASAP!!! @VangelistX, I take it from the header of this page that you are in charge. Given the increasing quantity of users impacted and the definite critical importance of this bug (computers stall and need to be rebooted sometimes multiple times per day), can we consider moving it from UNDECIDED to CRITICAL? Thank you. Back to my previous attempts, I also confirm the noapic nolapic acpi=off flags did not solve the problem but merely postponed it to 24h later... However, as recalled earlier, in my case the system stalls mostly after 15 to 20min of fullscreen video playback. Today I watched quite a lot of movies in small windowed screens, and everything went fine! I would say the main observable difference between windowed and fullscreen is an intensified CPU usage of Xorg. Others have the problem when intensely downloading... Is it possible Xorg or any other software can unbalance the HPET clock when harvesting the CPU resources? -- Computer hard locks randomly with ubuntu jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Computer hard locks randomly with ubuntu jaunty
EDIT: acpi=off led to a stall also... But appending noapic nolapic acpi=off to the GRUB menu led to (up to now) no stalling... video playback, ethernet connected for already 12 hours, no problem. Can you guys try and confirm this is a workaround? For what I understand, LAPIC uses its own clock set on the CPU's frequency to handle interrupts. When you disable it, you might get rid off some synchronisation issues. However, it is said often to make the ACPI Power Management unstable; so better use acpi=off also. The problem now is that there is no longer any CPU frequency scaling (since ACPI is discarded, the kernel cannot control the CPU frequency) and then the computer is running full speed... which on a laptop would quickly exhaust the battery and keep the CPU hot (unless on the contrary this sets the CPU to lowest frequency... how can I know that? maybe even not both cores are used...)! Does anyone have further information on that? What would be the default setting? -- Computer hard locks randomly with ubuntu jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Computer hard locks randomly with ubuntu jaunty
@ diopez: In my opinion, the problem is the following: - very early at startup (4sec for me most of the time), something makes the clocksource unstable, raising a tsc unstable. - then some process (possibly a process being very offensive on the whatever clock you use), triggers a big slow down (which I experience as a hpet increasing being issued and then I have to restart). For me, this process is either linked to ethernet (when I start the computer with ethernet cable in, I often do not reach KDM before the problem arises!!! which means after 1min my computer has already stalled) or to video playback (20min of film watching and I'm screwed...). Therefore this is must be a kernel issue, possibly not related to ethernet at all, which unbalances the tsc clock at startup till some software screws everything up. Has everyone already tested the new 2.6.30 kernel issued with Karmic Alpha1 today who can confirm the problem is still there??? -- Computer hard locks randomly with ubuntu jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Computer hard locks randomly with ubuntu jaunty
@shankerror: you also apparently have this TSC unstability, as mentioned in your dmesg: [1.082774] cpufreq: FSB changing is maybe unstable and can lead to crashes and data loss. [1.082790] cpufreq: FSB currently at 132 MHz, FID 13.5 [1.082820] Marking TSC unstable due to cpufreq changes dmesg seems to suggest this is due to some dynamic bus frequency change which causes trouble. I just found out in this (French) thread that people suggest so boot with acpi=off option... http://forum.ubuntu-fr.org/viewtopic.php?id=310384 I'm gonna try that. On my side, I also just tried 2.6.30-rc5, no change. -- Computer hard locks randomly with ubuntu jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Computer hard locks randomly with ubuntu jaunty
Just tried acpi=off option. I can't say it sure does the trick since I just rebooted but the tsc unstable comment is no longer issued in dmesg It really sucks not to use ACPI but for the time being, if it solves the problem, I'll vote for it! Can you guys confirm this also works for you? (I tried that on the 2.6.30-rc5 kernel which, by the way, solves my other INTEL drivers issue... this Jaunty is quite a piece of work!) -- Computer hard locks randomly with ubuntu jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Computer hard locks randomly with ubuntu jaunty
I can confirm on my side: at startup I get a tsc unstable message 4sec after boottime, then at some point (randomly) dmesg brings hpet increasing delta... and computer slows down dramatically. This problem happened last night while computer was idle. I tried all possibilities of Clocksources (from cat /sys/devices/system/clocksource/clocksource0/available_clocksource) in /boot/grub/menu.lst. None of them brings anything good. By default HPET is used and produces the least inconvenience. Note that then appending notsc, dmesg brought a message saying TSC cannot be completly discarded since the kernel is compiled with option CONFIG_X86_TSC. This might explain why it doesn't help. I also tried different older kernels in my grub list dating up to 2.6.27-7, same stalling problem. Though I haven't kept trace of the syslogs for those kernels. As for problem reproduction, it seems to arise with higher probabilities on video playback (under MPlayer). 20min of video playback are currently impossible. Anyone tried alternative distros such as Fedora or else? Is it really an Ubuntu/Jaunty problem? Dell E6400 / Dual Core 2.6.28-11-generic, 64bit -- Computer hard locks randomly with ubuntu jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 355155] Re: Computer hard locks randomly with ubuntu jaunty
I confirm. I've run my computer since this morning without ethernet connection whatsoever: no freeze, no slow down. Note that I still have this tsc unstable 4sec after boottime, which is triggerred 0.3sec after eth0 is detected, as follows [ 3.707706] :00:19.0: eth0: (PCI Express:2.5GB/s:Width x1) ... [ 3.707768] :00:19.0: eth0: Intel(R) PRO/1000 Network Connection [ 3.707840] :00:19.0: MAC: 6, PHY: 8, PBA No: 1004ff-0ff (...) some stuff concerning Power Management and ReiserFS [ 4.001034] Clocksource tsc unstable (delta = -69029874 ns) Is anyone currently working on this topic? I'd say it's quite an important issue! Restarting the computer every 20min makes it really unusable. -- Dell E6400 / Dual Core 2.6.28-11-generic, 64bit -- Computer hard locks randomly with ubuntu jaunty https://bugs.launchpad.net/bugs/355155 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
