[Bug 1722109] Re: iwlwifi regression in artful - intermittent total packet loss
[Expired for linux (Ubuntu) because there has been no activity for 60 days.] ** Changed in: linux (Ubuntu) Status: Incomplete => Expired -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1722109 Title: iwlwifi regression in artful - intermittent total packet loss To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722109/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1722109] Re: iwlwifi regression in artful - intermittent total packet loss
Following up on my last report here, it seems like my issues have been resolved in the last week or two here. I didn't keep track close enough to figure out if it was a recent package/kernel update or not, but just wanted to note that I'm no longer seeing this intermittent packet loss anymore over wifi. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1722109 Title: iwlwifi regression in artful - intermittent total packet loss To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722109/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1722109] Re: iwlwifi regression in artful - intermittent total packet loss
I upgraded my Dell 5520 laptop from Zesty to Artful over a month ago now, and I'm seeing behavior pretty much exactly as described by Max, starting immediately after the upgrade. I've been stuck either plugging into my wired ethernet adapter, tethering with my phone, or just living without connectivity because the wifi connection has been so unreliable. Sometimes (frequently right after a clean boot) it works just fine, and I'm having no problems meeting sustained, reliable, fast speeds for maybe a minute, but it breaks down pretty quickly (sometimes even just after just 10 to 15 seconds after wifi connects), and I see nothing but long windows of 100% packet loss. If I monitor long enough, it seems to recover for a brief window of time, but pretty quickly goes right back to 100% packet loss (in windows of maybe 30 seconds to a few minutes). This has been observed even today with the latest 4.13.0-19-generic kernel. For the first week or two after the upgrade, I've been trying to determine if it was just limited to specific access points I was using, but I've observed this same behavior while connected to 3 different locations, with 3 wildly different wifi systems. I also thought it might be the wifi adapter drivers in a kernel upgrade (this laptop has a builtin Intel Wireless 8265 card, using iwlwifi), so I picked up an Archer T4UH V2 (based on the Realtek RTL8812AU chipset) just in case using a different wifi driver would be enough to have working wifi again, but I'm seeing the same behavior with that adapter as well. So it certainly seems related to wifi functionality only, but also not driver specific. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1722109 Title: iwlwifi regression in artful - intermittent total packet loss To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722109/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1722109] Re: iwlwifi regression in artful - intermittent total packet loss
I am seeing a similar issue on the Broadcom WL driver in 17.10 with the latest 4.13 kernel. websites start responding extremely slow as if there is intermitted total packet loss. Maybe this isn't limited to iwlwifi? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1722109 Title: iwlwifi regression in artful - intermittent total packet loss To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722109/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1722109] Re: iwlwifi regression in artful - intermittent total packet loss
Please use kernel parameter "apparmor=0" to temporarily disable apparmor. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1722109 Title: iwlwifi regression in artful - intermittent total packet loss To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722109/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1722109] Re: iwlwifi regression in artful - intermittent total packet loss
It is not possible to test the latest upstream kernel. It appears to introduce further problems apparently related to apparmor which prevent dhclient running, preventing a wifi connection from being successful at all, as well as apparently causing display flickering, which is barely perceptible at first glance, but stressful to observe whilst attempting any substantial computer use. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1722109 Title: iwlwifi regression in artful - intermittent total packet loss To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722109/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1722109] Re: iwlwifi regression in artful - intermittent total packet loss
Unfortunately as the issue is intermittent, it is difficult to pinpoint a starting version exactly, but here's my best attempt: Ubuntu zesty 4.10 series: definitely not affected Ubuntu artful 4.12 kernels: problem not observed, though other iwlwifi issues (bug 1719210) observed - probably not affected Ubuntu artful 4.13 kernels: 4.13.0-12.13 (current) definitely affected, unable to conclusively comment if earlier artful versions affected or not, due to already swapping kernels around a lot at the time troubleshooting the other mentioned bug. It's worth noting that there is a large change in the versions of the Intel iwlwifi firmware microcode loaded to the device between these mentioned kernel versions. Regrettably newer versions of the kernel have dropped support entirely for interacting with the known good microcode version, so it isn't possible to test changing the kernel and microcode versions independently. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1722109 Title: iwlwifi regression in artful - intermittent total packet loss To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722109/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1722109] Re: iwlwifi regression in artful - intermittent total packet loss
Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem? Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.14 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14-rc4 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1722109 Title: iwlwifi regression in artful - intermittent total packet loss To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1722109/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
