This bug was fixed in the package linux-oem-5.10 - 5.10.0-1049.51
---------------
linux-oem-5.10 (5.10.0-1049.51) focal; urgency=medium
* focal/linux-oem-5.10: 5.10.0-1049.50 -proposed tracker (LP:
#1944209)
* e1000e extremly slow (LP: #1930754)
- SAUCE: e1000e: Separate TGP board type from SPT
- SAUCE: e1000e: Fixing packet loss issues on new platforms
* CVE-2021-41073
- io_uring: ensure symmetry in handling iter types in loop_rw_iter()
-- Chia-Lin Kao (AceLan) <acelan....@canonical.com> Mon, 27 Sep 2021
18:33:36 +0800
** Changed in: linux-oem-5.10 (Ubuntu Focal)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2021-41073
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https://bugs.launchpad.net/bugs/1930754
Title:
e1000e extremly slow
Status in HWE Next:
New
Status in OEM Priority Project:
Confirmed
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-5.10 package in Ubuntu:
Invalid
Status in linux-oem-5.13 package in Ubuntu:
Invalid
Status in linux-oem-5.14 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Invalid
Status in linux-oem-5.10 source package in Focal:
Fix Released
Status in linux-oem-5.13 source package in Focal:
In Progress
Status in linux-oem-5.14 source package in Focal:
In Progress
Status in linux source package in Hirsute:
In Progress
Status in linux-oem-5.10 source package in Hirsute:
Invalid
Status in linux-oem-5.13 source package in Hirsute:
Invalid
Status in linux-oem-5.14 source package in Hirsute:
Invalid
Status in linux source package in Impish:
In Progress
Status in linux-oem-5.10 source package in Impish:
Invalid
Status in linux-oem-5.13 source package in Impish:
Invalid
Status in linux-oem-5.14 source package in Impish:
Invalid
Bug description:
[Impact]
e1000e on TGP PCH encounters a network speed issue that rx speed is below
1MB/s
[Fix]
Intel provides 2 patches to fix this
https://patchwork.ozlabs.org/project/intel-wired-lan/list/?series=263466
[Test]
Verified by our Dell and Lenovo platforms and the bug reporter.
[Where problems could occur]
The fix only applies to e1000e with TGP PCH, and add a flag
"E1000_FFLT_DBG_DONT_GATE_WAKE_DMA_CLK". The impact should be minimized and
should not lead to other regressions.
=============================
We have dell latitude 5420 & 5520 laptops with onboard intel ethernet
controller.
Problem is that the ethernet port is extremely slow. about 100kbyte/s
download throughput while on a gigabit connection. Upload seems to work just
fine.
Also when I pxe boot the system it's also painfully slow.
But here comes the funny part. When I attach a usb memory stick the
throughput of the networkcontroller is as expected.
I've used latest ubuntu 20.04.2 kernel 5.8.0-55
I've used latest ubuntu 20.04.2 kernel 5.10.0-1029-oem
Turns out this problem is not showing up when I manually install the
5.8.18 kernel.
Also when I create my own iso with the help of Cubic and install the
5.8.18 kernel in it the pxe boot is working as expected with high
throughput
system: Dell latitude 5420 + 5520
nic: Ethernet Connection (13) I219-LM
ubuntu 20.04.2
module: e1000e
Please assist. Thank you
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