IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 27 December 2011   (all times are UTC)

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12:29
<zamba>
what is the minimum required hardware for a fluent experience?
12:29
i feel i have lots of screen lag
12:29
especially when using a browser
12:32
and switching windows in the x session is sluggish
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12:49
<andygraybeal>
do you guys have a ton of 'console-kit-daemon's running? i'm using ubuntu 10.04 using htop to look at resources
12:49
and i'm trying to find memory leaks as i slowly run out of memory ;) i found one 'gnome-power-manager'
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12:50
<andygraybeal>
i relinquished nearly 3GB with that
12:50
my system lasts about a month then needs rebooted
12:50
it's got 8GB of memory, but i run some kvm's too
12:51
oh and i run in 'thin client' mode.. which i meant to switch over to fat client this holiday, but i got terribly sick
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12:58
<andygraybeal>
yea, and bonobo-activation-server ? that sounds pretty stupid
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13:35
<andygraybeal>
no words of help? i gotta run into town .. for a report and finish my work hours log.
13:36
aight, lata :)
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14:45
<alkisg>
zamba: do you have LDM_DIRECTX=True in lts.conf?
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15:05
<zamba>
alkisg: yup
15:06
<alkisg>
zamba: and what are your client specs? ram and network speed?
15:06
<zamba>
100 mbps network
15:06
should be 128 MB ram
15:07
<alkisg>
It's a bit underpowered for a fluent experience
15:07
With a gigabit network and 256 RAM it would go better
15:08
Currently, can you watch a fullscreen divx video without dropped frames?
15:08
<zamba>
hm, ok.. i'll check that the next time i'm on site
15:11
<alkisg>
Btw, with 128 RAM, you might want to disable compcache and enable NBD_SWAP
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15:19
<_UsUrPeR_>
alkisg: ping?
15:19
<alkisg>
Hey _UsUrPeR_
15:19
<_UsUrPeR_>
sup dude. Merry post-Xmas
15:19
<alkisg>
Same to you too :)
15:20
<_UsUrPeR_>
I have a question pertaining to a kernel patch I am hoping to have implemented: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/907055
15:20
The maintainers are asking that I "submit upstream"
15:20
is that something that I can do by just tagging this patch, or is there some other process I am not aware of?
15:22
<alkisg>
"upstream" means submitting the bug to the kernel itself, instead of ubuntu/launchpad etc
15:22
<_UsUrPeR_>
aah. hmm.
15:23
<alkisg>
Your patch disables LVDS?
15:23
<_UsUrPeR_>
JUST for a certain model
15:24
a certain model by a certain manufacturer
15:24
<alkisg>
And what if someone has this model and wants to use LVDS?
15:25
<_UsUrPeR_>
This specific model does not have an LVDS output. It's not a laptop, so when you boot the client for the first time, there is an "invisible" second monitor attached to the output
15:26
<alkisg>
That card isn't available on *any* laptop?
15:26
<_UsUrPeR_>
The main crux of the problem is: this is not a laptop.
15:26
<alkisg>
I mean, your code may fix your specific model + use case, but could it break someone else's laptop?
15:26
Which uses the same graphics card as you?
15:27
<_UsUrPeR_>
Mind if I PM you pertaining to this?
15:27
<alkisg>
Sure
15:29
So, "upstream" in this case means that you should get in contact with the intel_lvds.c maintainers
15:30
Find the mailing list they use, and submit a bug report there, and the patch
15:31
_UsUrPeR_: did you say that it works ok with fedora?
15:31
<_UsUrPeR_>
Indeed it does!
15:31
<alkisg>
Why? Do they have a fedora specific patch for that?
15:32
<_UsUrPeR_>
I am not sure, tbh. I have been told that Fedora is using a different driver.
15:32
<alkisg>
lspci -nn -k | grep -A 2 VGA tells you the driver in use
15:35
<_UsUrPeR_>
In Fedora, I assume :)
15:35
<alkisg>
In both, to compare the difference
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15:35
<alkisg>
If Ubuntu should be using another driver, then that's another bug report you should file
15:36
<_UsUrPeR_>
Out of curiosity, if there is a difference, how does that help me?
15:36
Would ubuntu just switch drivers based on the difference?
15:37
<alkisg>
Now you're trying to push a kernel change for something that happens on one distro and not on another
15:37
Applying a fix from one distro to another sounds easier to me
15:38
(easier to get it accepted upstream)
15:38
<_UsUrPeR_>
Yeah, I see what you're saying. This was suggested by one of the canonical team based on feedback at the bottom of that bug report
15:38
<alkisg>
You didn't mention at the bug report that it works on Fedora though
15:39
<_UsUrPeR_>
This is true. I had thought this was independent. Ok, I see what you are saying. I will get the version numbers now, and report them in the bug.
15:39
<alkisg>
If you did, I imagine that they would ask "why does it work in fedora? where's their patch"?
15:39
<_UsUrPeR_>
This will add some credibility to the report, stating that Fedora already fixed it, etc etc etc
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15:41
<alkisg>
E.g. you may find that Fedora has already proposed your patch for inclusion, and you only need to wait for it to be available in Ubuntu
15:41
Or, you may find that Ubuntu is using the wrong driver for that model, and that needs to be changed, instead of blacklisting the model
15:46
<_UsUrPeR_>
This is almost the equivalent that stgraber implemented for another model with the same problem. I was just following along with how he implemented the patch: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/544671
15:47
The link I sent you was a bug entry for 10.04
15:47
same problem, different model
15:48
alkisg: ^^
15:48
<alkisg>
Yes, it says there that stgraber contacted upstream, to get his patch included
15:48
<_UsUrPeR_>
gotcha
15:48
<alkisg>
But, if it works in Fedora, that means that maybe there's a better fix somewhere else
15:49
Generally, blacklisting isn't a good fix, it's a workaround
15:49
So e.g. there may be other models with the same problem, and maybe all of them work in Fedora, because they solved the problem elsewhere
15:52
<_UsUrPeR_>
I see
16:00
<stgraber>
fedora probably has a different hack
16:00
the proper fix for that kind of hardware is the kernel patch
16:00
the non-workaround fix would be to have the manufacturer ship a fixed video BIOS and recall all existing devices, but that's pretty unlikely
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16:06
<stgraber>
_UsUrPeR_: updated and commented in the bug
16:07
_UsUrPeR_: looking at my e-mail history, you probably want to send that patch by e-mail to dri-devel@lists.sf.net
16:07
<_UsUrPeR_>
stgraber: Thanks. I was looking for the proper upstream link to add this to myself, and am not sure where I would go for that.
16:07
<stgraber>
_UsUrPeR_: here's the e-mail I sent them for mine: http://paste.ubuntu.com/784682/
16:09
_UsUrPeR_: last time I got feedback from them pretty quickly and it got pushed into the kernel a few days later. Adding a link to the mailing list discussion in the Launchpad bug may help the kernel team to include your fix once it's been reviewed upstream
16:10
as they said, they don't like distro patches, but as soon as something has been acked by an upstream kernel developer and pushed to the branch for the next linux kernel, they're usually fine cherrypicking it then
16:11
<_UsUrPeR_>
gotcha
16:12
stgraber: mind if I ask the date you sent that email you pasted to me?
16:12
<stgraber>
_UsUrPeR_: 03/23/2010 12:48 AM
16:13
<alkisg>
stgraber: maybe Fedora has a method that better detects if an LVDS is available or not, and that would work on other models too. Why not have a look at their patch?
16:14
<stgraber>
alkisg: there's such a method yes, but it's not better. They probably use the form factor from the DMI but that's wrong as we've been reported hundred of false positives
16:16
in general, I never look at fedora for their X stack as it's known to be pretty unstable and fails to work with a lot of hardware. Which is fine for a bleeding edge distro that doesn't care about binary drivers but doesn't quite match what ubuntu does
16:17
<alkisg>
If the specific method with the form factor is worse, then sure, one shouldn't use it. But in general I don't mind looking at unstable code for better solutions, e.g. they do have a better solution for the acpi problems with the laptops
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16:59
<andygraybeal>
greets
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17:04
<_UsUrPeR_>
stgraber: for the record, I guess dri-devel is using lists.freedesktop.org now for their mailing list
17:05
instead of sourceforge
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17:13
<stgraber>
_UsUrPeR_: good to know
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