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 51 
 on: November 02, 2016, 03:05:50 am 
Started by Rytz - Last post by retired1af
USB - Universal Serial Bus   :)

 52 
 on: November 01, 2016, 09:03:44 pm 
Started by Rytz - Last post by rbistolfi
What about this?

Code: [Select]
# setserial /dev/<tty_name> low_latency
Worth the try :)
I haven't done anything with USB power saving.  Thanks for the suggestion - I'll look into it.

Isn't setserial specific to serial ports only?

AFAIK USB ports are serial ports.

 53 
 on: November 01, 2016, 05:38:43 pm 
Started by Rytz - Last post by retired1af
I think this may contain a clue to the answers you seek.

http://unix.stackexchange.com/questions/91027/how-to-disable-usb-autosuspend-on-kernel-3-7-10-or-above

 54 
 on: November 01, 2016, 03:54:16 pm 
Started by Rytz - Last post by Rytz
What about this?

Code: [Select]
# setserial /dev/<tty_name> low_latency
Worth the try :)
I haven't done anything with USB power saving.  Thanks for the suggestion - I'll look into it.

Isn't setserial specific to serial ports only?

 55 
 on: October 31, 2016, 07:01:59 am 
Started by M0E-lnx - Last post by M0E-lnx
News of this nasty old bug have recently came out.

https://dirtycow.ninja/
https://access.redhat.com/security/cve/CVE-2016-5195

There is plenty of documentation explaining it online.
This affects all vector builds.

We have updated the kernel packages for 7.1 and 7.2.  Users who have vector 7.1 or 7.2 can update their kernels to fix this vulnerability

Here are the links to the kernels packages that have been fixed.

Vector 7.1 32-bit
http://vlcore.vectorlinux.com/stable/veclinux-7.1/patches/kernels/kernel-3.18.44-x86-1vl71.txz
http://vlcore.vectorlinux.com/stable/veclinux-7.1/patches/kernels/kernel-modules-3.18.44-x86-1vl71.txz

Vector 7.1 64-bit
http://vlcore.vectorlinux.com/stable/VL64-7.1/patches/kernels/kernel-3.18.44-x86_64-1vl71.txz
http://vlcore.vectorlinux.com/stable/VL64-7.1/patches/kernels/kernel-modules-3.18.44-x86_64-1vl71.txz

Vector 7.2 32-bit
http://vlcore.vectorlinux.com/untested/veclinux-7.2/x86/kernel4.4-4.4.27-x86-1vl72.txz
http://vlcore.vectorlinux.com/untested/veclinux-7.2/x86/kernel4.4-modules-4.4.27-x86-1vl72.txz

Vector 7.2 64-bit
http://vlcore.vectorlinux.com/untested/veclinux-7.2/x86_64/kernel4.4-4.4.27-x86_64-1vl72.txz
http://vlcore.vectorlinux.com/untested/veclinux-7.2/x86_64/kernel4.4-modules-4.4.27-x86_64-1vl72.txz

Since 7.2 has not (yet) been declared final, all 7.2 builds moving forward will have the fixed kernels.

For those of you who have never upgraded a kernel package, here is a howto that may come in handy.
http://vlcoredocumentation.readthedocs.io/en/latest/manuals/kernel-upgrade.html


When posting questions about the upgrade process, please specify the following.

- Which bootloader you are using (LiLO or GRUB2)
- Post the output of "mount |grep ^/dev"



 56 
 on: October 29, 2016, 04:10:22 am 
Started by vector - Last post by vincent2
There is a FCC problem with Channel 13 & 14:

http://kernelmag.dailydot.com/features/report/8051/the-mystery-of-wifi-channel-14/

You could use this approach:

https://wireless.wiki.kernel.org/en/developers/Regulatory/CRDA

Hope that helps,

Bigpaws

need iw pkg  and  libnl pkg  from slackware 64 cuurent repo,
  current libnl on vl7.2 test repo is old version
crda pkg can be found from slack repo..

 57 
 on: October 27, 2016, 11:11:54 am 
Started by Rytz - Last post by rbistolfi
What about this?

Code: [Select]
# setserial /dev/<tty_name> low_latency
Worth the try :)

 58 
 on: October 27, 2016, 11:06:09 am 
Started by Rytz - Last post by rbistolfi
Nop, we are just reading on the serial port as data from the station arrives.
I agree about the cables, it would be weird if all 4 cables were bad.
Did you try disabling power saving on usb ports?

 59 
 on: October 26, 2016, 11:14:21 am 
Started by Rytz - Last post by Rytz
Hi Rytz,

I would try the easiest first. USB devices are not great for latency, event a long cable can cause a lot of problems. Did you try a different cable? Are you using an USB hub? I recently experienced a lot of problems installing a weather station and it turned out to be the USB hub.

HTH, Rodrigo
Hi Rodrigo - thanks for the response.

There are four USB joysticks, and all four have been hit with this delay (I have logs that record the process).  Which device is affected when this occurs seems random.  I could swap out the cables, but I doubt all four cables are bad. 

I'm not using a USB hub.  I do think that I am using all USB ports on the machine, though (8-10 ports).

Are you reprogramming your weather station dynamically in a similar fashion?

 60 
 on: October 25, 2016, 06:14:48 pm 
Started by vector - Last post by bigpaws
There is a FCC problem with Channel 13 & 14:

http://kernelmag.dailydot.com/features/report/8051/the-mystery-of-wifi-channel-14/

You could use this approach:

https://wireless.wiki.kernel.org/en/developers/Regulatory/CRDA

Hope that helps,

Bigpaws

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