View Issue Details
|ID||Project||Category||View Status||Date Submitted||Last Update|
|0017061||CentOS-8||kernel||public||2020-02-17 12:58||2020-02-17 13:05|
|Platform||HP Elitebook 840 G6||OS||Centos||OS Version||8.1|
|Target Version||Fixed in Version|
|Summary||0017061: builtin e1000e Ethernet driver is unusable/slow on HP Elitebook 840 G6|
|Description||I've just tried to PXE-boot this laptop (HP-Elitebook 840 G6) - and observed, that it takes waaay too long.|
...installed via WIFI - which worked - but ended up again in a totally unusable/slow ethernet (attached to a Cisco-switch).
From 'ethtool' or 'dmesg' (or the switch's logs) - nothing looks wrong - it negotiates to 1000-full-duplex - but is slow.
(forcing it to lower speeds or different duplex/flow-control settings - doesn't change the behavior at all)
>00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (6) I219-LM (rev 11)
The symptom is always (if you're on ethernet) - that ethernet works - but is unusably SLOW.
PINGs - in both directions are in the 4-digit range (multiple seconds) - and ttcp/iperf gets only a few Kbytes(!) per sec.
I've tried so far:
none of those changes the behavior.
The actual FIX - is just to download/compile/install - intel's out-of-tree driver:
-rw-r--r-- 1 root root 314091 Feb 17 12:52 e1000e-3.6.0.tar.gz
it compiles out of the box - and if you overwrite the old driver --- things WORK with the expected speed.
|Steps To Reproduce||just try to PXE-boot or NET-install Centos-8.1 - on a HP Elitebook 840 G6 via wired Ethernet.|
Try 'ttcp' or 'iperf' via ethernet - it'll be just dog slow.
ping - reports multiple-seconds (1000+ ms) round-trip-times.
WLAN isn't affected by this at all.
|Additional Information||It would be nice - to have this newer driver included in future kernel-updates ...|