On Fri, Dec 27, 2019 at 09:13:41PM +0100, Christopher Gregory via blfs-support
wrote:
> >
> > I thought my boxes were running ok after rebooting my cheap network
> > switches (and apart from problems with my consumer-grade KVM which
> > is just a pain when the monitor has been switched off: in theory,
> > turn on monitor, change active position to a machine which is
> > either running or will wake/boot when panel switch is pressed -
> > sometimes ok, sometimes not).
> >
> > But this afternoon I left my completed test server build running so
> > that its cron backups would run - timeout because nfs target directory
> > still mounted. And now the same on that desktop box. <sigh/>
> >
> > All I can add is that although 5.3.11 seemed to be ok I later got
> > the same problems with that.
> >
>
> Hello Ken,
>
> This may not be the issue at all, but have you checked if there is updated
> firmware for your switches?
>
No, because there is no way to update them : these aren't the sort
of thing you would use in a data centre, they are just for home use,
I think one was about £25 when I bought it a few years ago.
> I live at a backpackers, and I have totally redone all the network wiring
> with cat6 cable.
>
> We have a fibre box, and from there the chepo isp provided AC750 Wireless
> Dual Band Gigabit Router Model No. Archer C2 is connected via a gigabyte
> network card to an old duel core athlon, then another gigabyte ethernet
> card connects to a Netis WF2780_EU wifi router. The wifi is turned off on
> the AC750. I have an external cat6 cable running down to my room, that is
> connected into a port on the back of the Netis (I am about 2 meters short of
> getting a wifi signal, but as wifi is not secure anyway, I don't care.)
>
> I am the only one, apart from the server that is using the wired network.
> Everyone else uses the wifi, and this setup gets heavy use on a daily basis.
> I only use ssh to access the server. Sadly the server is running an older
> version of Debian, due to the fact that the developer of the opensource
> hotspot server has not yet released a version that works on the latest Debian
> buster, so it is using an older kernel.
>
> I did have an issue when we were using an old tp-link modem/router
> combination with the wifi becoming very unstable, dropping out etc. When I
> upgraded the router to the netis, everyone became very happy. It has been
> going for about 3 years now, without issue.
>
> Rather than going out and buying a new switch, or switches, do you have
> someone who you could borrow one from, just for testing purposes? If all
> your issues go away with a borrowed switch, then you will know for certain
> that it is not the kernel at fault.
>
No, but for the moment the problem seems to have become "annoying"
rather than "I can't use this machine to time how long a package
takes to build" so it isn't a priority.
> You could always try the 5.4.2 version of kernel, though if the network
> changes have been back ported to even this version, then it will not really
> be helpful.
>
No, the mass of network changes came into 5.4-rc. One problem which
ISTR fixed a problem with large frames (on one of the chipsets which
use the r8169 driver) was fixed in either 5.4.1 or 5.4.2. But
trying to keep abreast of what is happening on the kernel list is
no-longer practical - I now use threading in mutt, and ignore 95% of
posts there.
Thanks anyway.
ĸen
--
We've all got both light and dark inside of us.
What matters is the part we choose to act on.
-- Sirius Black
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