Package: firmware-libertas Version: 20161130-1 Severity: important Hello,
I am new to the bug reporting on Debian and thus I apologize in advance for the likely poor quality of this bug report. I will try to explain throughly the issue although it is a little bit difficult to reproduce. - Case where it happens : *One* particular wifi hoptspot which happens to be the one I use at home. My phone tethering, work wifi hotspot and university wifi hotspot all work flawlessly though. - Expected behavior : Connect to the wifi, get redirected to the login portal, browse the internet with optimal speed. - Actual behavior : Connect to the wifi, get redirected to the login portal, browse the internet at speeds up to 64Kbps (~7-8Ko/s observed). - Details : -- The internet does work decently, as in it's not 7-8Ko/s of basic networking handshakes pretending to be data. It is actual data and any website can be loaded privided they have high timeout numbers and you are patient enough. -- This issue doesn't exist in the testing (20160824-1) version of the package, only on the sid one (20161130-1). -- I am running a Microsoft Surface Book right now, on a custom kernel image which forces the wifi card to never go on power save mode as this results in the described behavior for any version of the firmware-libertas package. -- I tried other network configurations, either disabling powersave through iw, or through networkmanager (which is the manager I use). Also no analysing of either kernel module, package, networkmanager, wpa_supplicant logs showed any different behavior with the working wifi access points described earlier. -- Wifi IP packets show no sign of refusal to serve data from my access point either. -- Downgrading to the testing version (20160824-1) solved my issue. - Possible fix : The might have been some powersave-related checks for it being enabled added in the source code that prevent the kernel patches from disabling it on hardware where it is necessary because Microsoft apparently tried some creativity in their hardware design this time around... - Addendum : I'm sorry I don't really have much more to this case to say. I hope someone who actually edited that code upstream sees this and can bring in some insight. I've been fighting with this bugs for a whole week now and nothing was ever concluant from what I looked at, which is why I don't even have logs to show for it. Thanks for reading. -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.9.0-rc8-mssp4+ (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) firmware-libertas depends on no packages. firmware-libertas recommends no packages. Versions of packages firmware-libertas suggests: ii initramfs-tools 0.125 -- no debconf information
