** Description changed: [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
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1930754 Title: e1000e extremly slow To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1930754/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
