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lkraav
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PostPosted: Tue May 24, 2011 1:33 pm    Post subject: Reply with quote

ponciarello wrote:
which bugs are you referring to? :?


i'm also at a loss with his comment..
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PostPosted: Tue May 24, 2011 2:33 pm    Post subject: Reply with quote

ponciarello wrote:
which bugs are you referring to? :?


Kernel will not compile with squashfs + XZ, suspend and hibernate not working, Gentoo will not shutdown (hangs after mount / ro), corruption with reiser4 (actually it got worst with vanilla 2.6.38)
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PostPosted: Tue May 24, 2011 3:01 pm    Post subject: Reply with quote

dE_logics wrote:
Kernel will not compile with squashfs + XZ

it builds fine here, also on master-2.6.39.

Quote:
suspend and hibernate not working

this is an upstream kernel problem

Quote:
Gentoo will not shutdown (hangs after mount / ro)

can't help much with this, sorry, I use slackware

Quote:
corruption with reiser4 (actually it got worst with vanilla 2.6.38)

so this is not a zen problem too.
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PostPosted: Tue May 24, 2011 7:26 pm    Post subject: Reply with quote

ponciarello wrote:
which bugs are you referring to? :?


All of them. Like inability to even boot zen based livecd under x64 KVM machine.
I also have had with zen and I'm back to gen2-sources. Just too much trouble with zen.
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PostPosted: Tue May 24, 2011 7:45 pm    Post subject: Reply with quote

mbar wrote:
All of them. Like inability to even boot zen based livecd under x64 KVM machine.

I boot very often slax-remix (i486 and x86_64, zen-kernel based) and the derivate porteus on a x86_64 kvm, really don't know which livecd you're referring to, sorre.
but I think you have to blame only who provides the livecd ;)
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PostPosted: Tue May 24, 2011 8:53 pm    Post subject: Reply with quote

The only problems I've ever had with zen-sources are their lackluster release timing and format. From only getting them through the git, to having them in portage, to changing the naming, and so on, keeping up with zen sources to be able to make seeds with them has been interesting, to say the least. To say the most, it's been a PITA!

As far as bugs, before you condemn the source, be absolutely SURE you've configured things properly. One bad setting can destroy a kernel's ability to work properly. Something I also recently discovered is if you push the timer frequency beyond 1000Hz, you will make an unstable kernel. This effect is amplified with multi-core processors, and can lead to all manner of trouble...file system corruption, inability to boot, drivers that don't load properly, and so on.

Before you give up on zen, try one of my seeds. The only caveat is that you set the timer less than 1500Hz. With multi-core processors, 300Hz will work just fine. I actually recommend that, as multi-core processors have more than enough horsepower without having to "hold the pedal to the floor" so to speak. Since the timer frequency multiplies itself by the number of processor cores, a four core processor would wind up creating 1200Hz internally.

Cheers,
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PostPosted: Tue May 24, 2011 9:01 pm    Post subject: Reply with quote

I've been running zen through several iterations and have always kept the hertz at 1000 without any problem at all.
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PostPosted: Tue May 24, 2011 10:09 pm    Post subject: Reply with quote

Be that as it may, please note that I have experience with others who have had issues with that particular setting. I am sending out that reality for those who are having issues, not to compare with others who are not having issues. My laptop works fine at 1500, but none of the multi-core processors I have can handle it. At 300Hz, none of my machines have issues.

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PostPosted: Wed May 25, 2011 3:01 am    Post subject: Reply with quote

pappy_mcfae wrote:
Be that as it may, please note that I have experience with others who have had issues with that particular setting. I am sending out that reality for those who are having issues, not to compare with others who are not having issues. My laptop works fine at 1500, but none of the multi-core processors I have can handle it. At 300Hz, none of my machines have issues.


thanks for the tips. it's stuff like this that makes it worthwhile hanging out in the forums.

i've had a relatively stable experience with 2.6.38.5-zen+, aside from my acer-wmi problems and the occasional btrfs BUG. i now re-checked and indeed i had been running this i3-330UM laptop at 1000Hz. this info was good enough reason to drop the timer down and enable some pm debug stuff as well for next testing leg.
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PostPosted: Wed May 25, 2011 4:12 am    Post subject: Reply with quote

ponciarello wrote:
mbar wrote:
All of them. Like inability to even boot zen based livecd under x64 KVM machine.

I boot very often slax-remix (i486 and x86_64, zen-kernel based) and the derivate porteus on a x86_64 kvm, really don't know which livecd you're referring to, sorre.
but I think you have to blame only who provides the livecd ;)


That livecd I my own :)
It is unable to boot when zen-kernel is both on host and on livecd (I have a laptop with i7) and when livecd kernel has CK BFS enabled. I get only blank screen just after grub.
gentoo-sources do not experience that problem.
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PostPosted: Wed May 25, 2011 5:10 am    Post subject: Reply with quote

ponciarello wrote:
dE_logics wrote:
Kernel will not compile with squashfs + XZ

it builds fine here, also on master-2.6.39.

Quote:
suspend and hibernate not working

this is an upstream kernel problem

Quote:
Gentoo will not shutdown (hangs after mount / ro)

can't help much with this, sorry, I use slackware

Quote:
corruption with reiser4 (actually it got worst with vanilla 2.6.38)

so this is not a zen problem too.


It does not build with 2.6.37 here.

Suspend and hibernate works with gentoo and vanila sources 2.6.37

reiser4 corruption does not persist with systemrescuecd.

ponciarello wrote:
I boot very often slax-remix (i486 and x86_64, zen-kernel based) and the derivate porteus on a x86_64 kvm, really don't know which livecd you're referring to, sorre.
but I think you have to blame only who provides the livecd


There are lot of problems that I don't experience but a lot of other users and PCs administered by myself do. That doesn't mean there are no bugs. No wonder software testing is big business.

Lastly, I tend to report a lot of bugs, and the first thing they ask me to do is use vanilla kernel.
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PostPosted: Wed May 25, 2011 5:13 am    Post subject: Reply with quote

pappy_mcfae wrote:
Something I also recently discovered is if you push the timer frequency beyond 1000Hz, you will make an unstable kernel. This effect is amplified with multi-core processors, and can lead to all manner of trouble...file system corruption, inability to boot, drivers that don't load properly, and so on.


One more issue is that the corefrequency tends to jump more often without any reasons.
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PostPosted: Wed May 25, 2011 6:55 am    Post subject: Reply with quote

This might be the root of the issue. All I know is that I've had at least three seed users who had problems with the timer settings...and all were multi-core. One was an i7, which was brought to its knees at 1000Hz. That was a bit of a humbling experience, but one I am glad I had nonetheless.

Cheers,
Pappy
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PostPosted: Thu May 26, 2011 6:01 am    Post subject: Reply with quote

bad news for 2.6.39? :(
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PostPosted: Thu May 26, 2011 6:04 am    Post subject: Reply with quote

No kidding. :(

Cheers,
Pappy
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PostPosted: Thu May 26, 2011 12:48 pm    Post subject: Reply with quote

Quote:
bad news for 2.6.39?


yes - I had to go back to 2.6.38 because of this exact problem

but it took a while since the symptoms were very weird
(e.g. the "ps" command hanging (happened once),
strange browser errors (honest) and the give away failure
to be able to halt or reboot ...)
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PostPosted: Thu May 26, 2011 6:59 pm    Post subject: Reply with quote

Just out of curiosity, can the people getting crashes on 2.6.39 post their lspci -n and lsmod?
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PostPosted: Fri May 27, 2011 4:22 pm    Post subject: Reply with quote

ponciarello wrote:
bad news for 2.6.39? :(


eww

upstream broke it once more :(


so 2.6.39 without ck-patches (or specifically: BFS) should be fine ?



how about the suspend issue (for me suspend-to-ram is important hibernate kinda doesn't work - I do not use):

what cards are affected ? AMD ? evergreen ?


thanks !
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PostPosted: Mon May 30, 2011 7:00 pm    Post subject: Reply with quote

good news? :)
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PostPosted: Sat Jun 04, 2011 1:37 am    Post subject: Reply with quote

ok I got this really weird issue with screen output

and master-2.6.39


after it says: "booting kernel" there's no change, scrolling of text or anything else

it just sits there and waits for some serious mode change

graphics driver / card: Radeon 5850, opensource radeon-driver


it would be easy if I could compile in the radeon module and the additional dependencies but with that it would hardlock at boot (from the start - no improvements until now - so it has to be compiled as a module)


so i'm forced to fly this baby blind (enter password for the luks partitions) until I get to the login prompt, login as root

and do

Code:
modprobe radeon modeset=1


or
Code:
/etc/init.d/xdm start


after that I can get to X


with xdm start only (without loading the kernel-module) the output of the VTs is still the same like right after launching the kernel

the last line displayed is "booting kernel" - switching through them alt+f1 - f6 ...

shows no difference



but when inserting / modprobeing the module output of the VTs is displayed again and also for all the other VTs



does this ring a bell for anyone ? how can this be fixed ? did I miss to compile a missing dependency into the kernel or is this a known regression ?


Many thanks in advance ! :)



besides that 2.6.39-zen is running great so far - it feels really fast ^^
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PostPosted: Sun Jun 05, 2011 5:18 am    Post subject: Reply with quote

same here since the first versions of master-2.6.39 (nvidia): I got around it installing the proprietary video driver via ssh and boot after with a graphical login manager (but still no output on the VTs).
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PostPosted: Mon Jun 06, 2011 3:46 pm    Post subject: Reply with quote

ponciarello wrote:
same here since the first versions of master-2.6.39 (nvidia): I got around it installing the proprietary video driver via ssh and boot after with a graphical login manager (but still no output on the VTs).


well, according to the log of 2.6.39.1 it doesn't seem if that update would fix it :\


are any bug reports or reports to lkml known ?


slightly related: http://forums.gentoo.org/viewtopic-p-6696657.html?sid=721d801b7775a6cf30ccec2d2593228b

but I don't have uvesa or vesafb enabled afaik

so it's strange that I'm also affected ...
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PostPosted: Tue Jun 07, 2011 6:30 am    Post subject: Reply with quote

Steven (thanks!) seems to have fixed it in latest git. :)
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PostPosted: Wed Jun 08, 2011 5:28 pm    Post subject: Reply with quote

confirmed !

thanks Steven :)


where's the Donate / paypal stuff that was used to be on the zen-kernel.org homepage ? :o
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PostPosted: Wed Jun 08, 2011 7:24 pm    Post subject: Reply with quote

how about flattr button instead.
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