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 |
| Reporter | sz_wolfi | ||||
| Priority | high | Severity | major | Reproducibility | always |
| Status | new | Resolution | open | ||
| Platform | HP Elitebook 840 G6 | OS | Centos | OS Version | 8.1 |
| Product Version | 8.1.1911 | ||||
| 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) lspci says: >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: kernel-core-4.18.0-147.3.1.el8_1.x86_64 kernel-core-4.18.0-147.5.1.el8_1.x86_64 kernel-core-4.18.0-147.el8.x86_64 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 ... | ||||
| Tags | "Network" | ||||
