{"id":2647,"date":"2019-11-24T23:44:22","date_gmt":"2019-11-25T07:44:22","guid":{"rendered":"http:\/\/rglinuxtech.com\/?p=2647"},"modified":"2019-11-24T23:44:22","modified_gmt":"2019-11-25T07:44:22","slug":"ethernet-intel-e1000e-ok-with-some-kernel-5-4-systems-but-not-all","status":"publish","type":"post","link":"https:\/\/rglinuxtech.com\/?p=2647","title":{"rendered":"Ethernet – Intel e1000e OK with some Kernel 5.4 Systems, but not all?"},"content":{"rendered":"

After updating my main HP Z820 system to Kernel 5.4, I found that the previous Intel e1000e<\/strong> Ethernet problem I had encountered on my test system with Kernel 5.4-rc6 seemed to have reappeared. (see https:\/\/rglinuxtech.com\/?p=2632<\/a> ).<\/p>\n

But – this time, two of my systems with e1000e drivers were OK, but the third – the HP Z820 – was not, and the Ethernet connection kept going up and down, and was unuseable :<\/p>\n

...............................<\/span><\/strong>
\n[ 193.640586] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx\/Tx<\/span><\/strong>
\n[ 193.840732] userif-2: sent link down event.<\/span><\/strong>
\n[ 193.840733] userif-2: sent link up event.<\/span><\/strong>
\n[ 194.866096] userif-2: sent link down event.<\/span><\/strong>
\n[ 194.866098] userif-2: sent link up event.<\/span><\/strong>
\n[ 199.974917] userif-2: sent link down event.<\/span><\/strong>
\n[ 199.974919] userif-2: sent link up event.<\/span><\/strong>
\n[ 200.443424] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx\/Tx<\/span><\/strong>
\n[ 200.643597] userif-2: sent link down event.<\/span><\/strong>
\n[ 200.643599] userif-2: sent link up event.<\/span><\/strong>
\n[ 201.650030] userif-2: sent link down event.<\/span><\/strong>
\n[ 201.650032] userif-2: sent link up event.<\/span><\/strong>
\n[ 206.779077] userif-2: sent link down event.<\/span><\/strong>
\n[ 206.779079] userif-2: sent link up event.<\/span><\/strong>
\n[ 207.231956] e1000e: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx\/Tx<\/span><\/strong>
\n..................\u00a0 ( repeated ) ...............................<\/span><\/strong><\/code><\/p>\n

The problem is compounded, as two of the systems have apparently-identical 82574L Gigabit devices, and one (Asrock Xeon) works, while the other (HP Z820 Xeon) does not..\u00a0\u00a0\u00a0 The third (working) system has an 82579LM.<\/p>\n

On the Z820, I found that – as mentioned in the 5.4-rc6 article – reverting<\/em> the patch fixed the problem.<\/p>\n

More research is needed..<\/p>\n

Robert Gadsdon.\u00a0\u00a0 November 24th 2019.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

After updating my main HP Z820 system to Kernel 5.4, I found that the previous Intel e1000e Ethernet problem I had encountered on my test system with Kernel 5.4-rc6 seemed to have reappeared. (see https:\/\/rglinuxtech.com\/?p=2632 ). But – this time, two of my systems with e1000e drivers were OK, but the third – the HP Z820 – …<\/span> Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1494,1298,1323,14,15,1437,19,1533],"tags":[1486,2134,2133,306,2119,1242,418],"class_list":["post-2647","post","type-post","status-publish","format-standard","hentry","category-ethernet","category-hardware","category-intel","category-kernel","category-linux-2","category-network","category-opinion","category-patches","tag-ethernet","tag-intel-e1000e","tag-kernel-5-4","tag-problems","tag-revert-patch","tag-some-systems-ok","tag-workaround"],"_links":{"self":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/posts\/2647","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2647"}],"version-history":[{"count":1,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/posts\/2647\/revisions"}],"predecessor-version":[{"id":2648,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=\/wp\/v2\/posts\/2647\/revisions\/2648"}],"wp:attachment":[{"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rglinuxtech.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}