Re: Intel X540-AT2 and Debian: intermittent connection
On Tue, 2022-11-15 at 12:38 +0100, hw wrote:
> On Mon, 2022-11-14 at 13:21 +0100, hw wrote:
> > On Mon, 2022-11-14 at 12:28 +0100, stefano gozzi wrote:
> > > Please loot at this:
> > > https://www.linuxquestions.org/questions/linux-networking-3/intel-x540-t2-network-card-installed-but-only-at-100mbit-cant-change-or-improve-4175686736/
> > >
> > > It seems that you need a 8x pcie slot to work fine
> >
> > Thanks, the card is in an 8x slot and has been working fine with Fedora. I
> > didn't change anything but using Debian instead of Fedora.
>
> Ok I pulled the server from the rack and put another fan to blow directly on
> the
> card in case it might overheat.
>
> And I have to correct myself. The card is in an 8x slot and according to the
> manual of the mainboard it's supposed to be 8x and not 4x. I pulled it and
> put
> it back in.
>
> However, lspci says "LnkSta: Speed 5GT/s (ok), Width x4 (downgraded)".
>
> Usually cards in PCI slots with 4 instead of 8 lanes still work fine, and the
> card did work in that slot with Fedora.
>
> I found that I had to unplug the network cable and to plug it back in before I
> could send/receive pings. I already tried a different network cable and it
> didn't make a difference.
>
> I suspect that Debian might be doing something differently or not doing that
> Fedora does which causes the intermittent connections.
>
> Any ideas? Backups over an 1GB link are excruciatingly slow ...
>
Update: I booted a Fedora live system and the connection is also intermittent.
So it's not a Debian issue. It's still an issue, though ...
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