/srv/irclogs.ubuntu.com/2009/03/13/#ubuntu-kernel.txt

Kamping_Kaiserah goody. bug 292381 . Ill suscribe myself00:38
ubot3Malone bug 292381 in linux "[hardy] kernel 2.6.24-21-generic and gcc version mismatch" [High,In progress] https://launchpad.net/bugs/29238100:38
QuintasanCan anyone tell me will the ext4 fix (scheduled to release with 2.6.30) will be backported to Ubuntu kernel?12:27
rtgQuintasan: Jaunty is following stable updates wrt ext412:36
Quintasanwrt?12:37
rtgQuintasan: 'with respect to'12:42
dandelrtg, did the 2.6.25 kernel build mess up or something?12:42
dandelit's completely unbootable on 1 of my boxes.12:43
rtgdandel: I only received notification that it built. Have to tried 2.6.26 as well?12:44
amitk_dandel: it is an automated build12:44
dandeli have tried 2.6.25 and 2.6.26 against bug #33870112:44
ubot3Malone bug 338701 in linux "acpi_irq is not set properly." [Undecided,Incomplete] https://launchpad.net/bugs/33870112:44
dandel2.6.26 and 2.6.27 both have the same error12:44
dandelas for 2.6.25 i put the exact stop point up on the bug report 12:45
dandelit appears that the start_secondary integration might of been what knocked out my acpi.12:47
rtgamitk_: so, you don't like that VFP patch, huh?12:54
amitk_amitk_: 1 down, 1 to go :)12:57
Quintasanrtg: thanks12:57
amitk_rtg: The remaining one has been around for over a year. I don't like applying patches that upstream might have rejected12:57
Kanohi rtg 13:22
Kanortg: did you read my mail about hpa13:22
rtgKano: just working through the list. I was traveling yesterday13:23
Kanortg: could you revert the hpa change?14:17
Kanoi can do that for my kernel packages, but i dont want to have offline members of my raid when i test u14:17
Kanohttp://kernel.ubuntu.com/git?p=ubuntu/ubuntu-jaunty.git;a=commit;h=0d3c04214230d4340345a7a5d5353883b3299d9f14:19
Kanorevert this please14:19
sorenKano: What's the problem with it?14:26
Kanothe problem is that i have got hds with hpa which are raid members (using dmraid)14:27
Kanoif hpa is unlocked it is not working. another problems war boards which store bios backup information14:28
Kanoat the end of a hd14:28
Kanothen that hd is locked by hpa and it should not be overritten14:28
Kanothis is known for some new gigabyte boards14:29
Kanoi wrote the same to the mailinglist14:29
Kanothat feature is called virtual dual bios14:32
sorenKano: Wouldn't the same problem happen to people who are used to having hpa disabled by default, then?14:42
Kanosoren: dmesg|grep HPA14:42
Kanono output -> no error14:42
sorenEh?14:43
Kanosoren: most systems do not use hpa14:44
sorenIf someone is used to having HPA disabled and have RAID members configured like that, and we suddenly don't disable it by default anymore, /they/ are going to be screwed, aren't they?14:44
Kanosoren: the motherboard raid seems to rely on it14:45
Kanoit is impossible that you have to unlock it. windows does not unlock hpa14:45
Kanoonly 1 user even had issues from disabling hpa and that was definitely his own fault14:46
Kanobecause he used the 32 gbit limit jumper. he did not do that by purse, i guess he just looked at the jumper picture the wrong way14:47
Kanothats a very clear error then, when fdisk -l reports a 32 gb partition only14:48
Kanoata2.00: HPA detected: current 66055248, native 31258180814:49
Kanothats how it looks14:49
sorenHow is it impossible that I have to unlock it? I've most certainly had systems before where the BIOS wanted me to not see parts of the hard drive and had the kernel fix that up for me.14:49
Kanoin dmesg14:49
Kanosoren: you can still force it,but do not disable hpa by default14:49
sorenCorrect me if I'm wrong, but disabling HPA has been the default in Ubuntu for a long time, hasn't it?14:50
Kanoit was default for 8.0414:51
Kanobut not for 8.1014:51
rtgsoren: /etc/modprobe.d/options:options libata ignore_hpa=114:51
Kanomaybe in the options, but i do not use those options14:51
Kanobut if that was the option, then the override would be libata.ignore_hpa=1 if somebody needs it14:51
sorenKano: Well, pardon me, but how are your defaults our problem?14:52
rtgKano: so, Jaunty behavior has not changed. we removed the modprobe option and made ignore_hpa=1 the default in the module.14:52
Kanortg: it is still the wrong. the kernel default is better14:53
rtgKano: feel free to add the option to your modprobe options14:53
Kanothey do not matter when you statically build it14:53
rtggrub is your friend14:54
sorenKano: That really depends on how you define "better".14:55
Kanosoren: i define it less problematic. if you have got a raid and when you boot linux and then you see all are offline members, then you can get panic14:56
Kanoonly full power off works14:56
sorenKano: Yes, but if you installed your system with ignore_hpa=1 and it's suddenly =0, then you have the same problem.14:57
Kanosoren: only in the case that hpa was used! thats a very rare case14:57
soren...and since we've had ignore_hpa=1 for a while now, sticking with that will cause least problems for /our/ users.14:57
Kanonot correct14:57
Kanoit will force problems for NEW users14:58
Kanowith gigabyte boards14:58
* soren finds something else to do...14:58
sorenIt's not my decision anyway.14:58
* Daviey wonders what LTS -> LTS upgrade will bring15:01
rtgDaviey: IIRC, ignoring HPA has been the default since Feisty15:03
DavieyOh15:03
Daviey< Kano> it was default for 8.04 <-- confused me 15:03
Kanosoren: what do you win when you unlock hpa, next time the bios writes its backup again there an then data of the last partition at the end is overwitten15:03
rtgDaviey: can't tell you how we'll handle Dapper upgrades15:03
KanoDaviey: it was a kernel config setting for hdX devices (legacy code), but now ide legacy is not used anymore15:04
johanbranubhav: Changing up_threshold for the ondemand governor made a big difference. Thanks!16:04
anubhavjohanbr:cool :)16:04
johanbrFor the Ubuntu kernel devs: up_threshold for the ondemand governor was set to 60 in Intrepid, but in Jaunty it's 95.16:07
johanbrThis makes the ondemand governor very slow to trigger. What's the reason for this change?16:07
anubhav johanbr: laptops will run much cooler i guess16:10
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JanCanubhav: shouldn't that be set depending on laptop vs. desktop then?17:04
anubhavamitk : For the Ubuntu kernel devs: up_threshold for the ondemand governor was set to 60 in Intrepid, but in Jaunty it's 95.This makes the ondemand governor very slow to trigger. What's the reason for this change?17:06
anubhavamitk: This question was asked by johanbr.Do you have any idea?17:07
amitkanubhav: I am not aware of the reason for the change. Is it different from the value that upstream uses?17:09
rtgamitk: it is the upstream code, but it changed a bit from Intrepid.17:09
mjg59No, it's what upstream uses when you have microaccountin17:10
anubhavmjg59: By upstream do you mean the kernel?17:14
rtganubhav: by upstream we mean Linus' repository17:16
mjg59Yes17:18
anubhavso the driver by default sets to 95?17:18
anubhavlet me check the code17:18
mjg59MICRO_FREQUENCY_UP_THRESHOLD is the relevant define here17:20
anubhavyeah got it,but in the Documentation its mentioned that 80 is default17:21
anubhavhttp://lxr.linux.no/linux+v2.6.28.4/Documentation/cpu-freq/governors.txt17:22
mjg59The documentation is out of date17:23
mjg59It's 80 if you don't have support for idle microaccounting17:23
mjg59Because there's less certainty about the true workload17:23
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Unggnuhi all17:44
UnggnuHow can I activate/use the Ubuntu kernel staging drivers?17:45
Unggnulike the ones listed under https://lists.ubuntu.com/archives/jaunty-changes/2009-January/003537.html17:53
davygrvywhat are the kernel options to reserve irq 3, port range 210-21F and dma 1 ?20:50
davygrvysomething I'll be running in dosemu will need them20:51
mjg59Simply don't bind a driver to them20:54
davygrvyall that boot stuff is automatic20:56
mjg59Which driver is taking them?20:56
davygrvydon't know yet, I want to be prepared20:57
davygrvyin the older hardware the pccard redirector took 320:57
mjg59The kernel isn't responsible for IRQ routing. If there's hardware that's decoding that irq and io port ranges then simply getting the kernel to ignore them won't make things magically work for you20:58
davygrvyis there a how-to for irq, port, and dma conflicts?20:58
davygrvysome stuff is programmable, though.  the pci video card could do three irqs21:01
mjg59Programmable by the bios, yes21:01
davygrvywell, if this bios let me in :)  but that's another story about old IBM thinkpad lame-o bios21:02
mjg59What, precisely, are you trying to do?21:02
davygrvywhat are the kernel options to reserve irq 3, port range 210-21F and dma 1 ?21:02
mjg59That's not a useful question for you to ask21:02
davygrvyiow, disallow it being used21:02
davygrvywhy?21:03
mjg59Because dosemu isn't going to pay any attention to whether or not the kernel has allocated them anyway21:03
mjg59Why are you trying to prevent them being used by the kernel?21:04
davygrvybecause the specail ISA data aquisition card for this old DOS app uses them21:04
mjg59Ok.21:07
mjg59But the kernel doesn't allocate IRQs, the BIOS does. And if the BIOS gives IRQ 3 to something else then reserving it in the kernel won't help.21:08
davygrvyIn that respect I see, but would be nice see a nice error message telling me that21:09
davygrvyI'm sorry, the port redirector for PCCards is on 3, can not continue.. or whatever21:09
davygrvywhat are the kernel boot options to reserve irq 3, port range 210-21F and dma 1 ?21:10
mjg59You can prevent the kernel using IRQ 3 for PCI by passing irqmask=0xfff721:11
davygrvywhere is that mask documented?21:12
mjg59Documentation/kernel-paramaters.txt21:12
davygrvylooks to be ~(0x0003)21:12
davygrvyahh21:12
davygrvythat you21:12
davygrvyerr21:12
davygrvythank you21:12
davygrvythat took alot of words to get there21:13
mjg59But that doesn't reserve irq 321:14
mjg59Or the port range or dma port21:14
mjg59There's the pnp_reserve_* arguments, but again those will only help if the device is being configured by pnp21:14
mjg59In the general case what you're asking for is impossible21:15
davygrvyarmed with the boot options I expect to find success,  at least in the debugging area21:17
davygrvypci=irqmask=0xMMMM21:20
=== Pricey is now known as EvilChild
lesshastehi22:39

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