> -----Original Message----- > From: Paul Menzel [mailto:[email protected]] > Sent: Wednesday, February 7, 2018 3:41 AM > To: Limonciello, Mario <[email protected]> > Cc: Pali Rohár <[email protected]>; [email protected]; > [email protected]; [email protected] > Subject: Re: dell-smbios makes wireless card unusable on Dell XPS 13 9360 > > Dear Mario, > > > On 02/06/18 20:51, [email protected] wrote: > >> -----Original Message----- > >> From: [email protected] > >> [mailto:platform-driver-x86- > >> [email protected]] On Behalf Of Paul Menzel > >> Sent: Tuesday, February 6, 2018 10:08 AM > >> To: Limonciello, Mario <[email protected]> > >> Cc: Pali Rohár <[email protected]>; it+platform-driver- > [email protected]; > >> [email protected]; [email protected] > >> Subject: Re: dell-smbios makes wireless card unusable on Dell XPS 13 9360 > > >> On 02/06/18 16:58, [email protected] wrote: > >> > >>>> -----Original Message----- > >>>> From: Paul Menzel [mailto:[email protected]] > >>>> Sent: Tuesday, February 6, 2018 9:50 AM > >>>> To: Pali Rohár <[email protected]>; Limonciello, Mario > >>>> <[email protected]>; [email protected] > >>>> Cc: [email protected]; Linux Kernel Mailing List > >>>> <linux- > >>>> [email protected]> > >>>> Subject: dell-smbios makes wireless card unusable on Dell XPS 13 9360 > >> > >>>> Adding `dell-smbios` to `/etc/modules` on the Dell XPS 13 9360, it seems > >>>> to badly effect the Wireless LAN device, causing it to be absent or to > >>>> not work. > >>>> > >>>> In one case, the whole system lagged, that means, the log in screen > >>>> stayed grayed out for 15 seconds, and the mouse pointer stopped moving > >>>> every 20(?) seconds for some seconds. > >>> > >>> Can you please confirm if you're indicating this is a regression in 4.15? > >>> Or was this present in earlier kernels too? > >> > >> Yes, it happened with Ubuntu’s 4.13 too. My original message had one log > >> attached where the Wifi wasn’t visible at all. > > > > Looking at that log it looks to me that the ath10k firmware crashed, not > > that > > dell-smbios lagging caused the crash. > > > > [ 15.262226] ath10k_pci 0000:3a:00.0: firmware crashed! (uuid > > a6c40788-b7ad- > 4f6a-890a-62e62c1f6e5f) > > [ 15.262233] ath10k_pci 0000:3a:00.0: qca6174 hw3.2 target 0x05030000 > chip_id 0x00340aff sub 1a56:1535 > > [ 15.262235] ath10k_pci 0000:3a:00.0: kconfig debug 0 debugfs 1 tracing 1 > > dfs 0 > testmode 0 > > [ 15.262645] ath10k_pci 0000:3a:00.0: firmware ver WLAN.RM.4.4-00022- > QCARMSWPZ-2 api 6 features wowlan,ignore-otp crc32 4d458559 > > [ 15.262941] ath10k_pci 0000:3a:00.0: board_file api 2 bmi_id N/A crc32 > 0e26ef70 > > [ 15.262943] ath10k_pci 0000:3a:00.0: htt-ver 0.0 wmi-op 4 htt-op 3 cal > > otp > max-sta 32 raw 0 hwcrypto 1 > > [ 15.274887] ath10k_pci 0000:3a:00.0: failed to get memcpy hi address for > firmware address 4: -16 > > [ 15.274900] ath10k_pci 0000:3a:00.0: failed to read firmware dump area: > > -16 > > [ 15.274909] ath10k_pci 0000:3a:00.0: Copy Engine register dump: > > > > Do you have a strong correlation with dell-smbios loading and the wireless > > firmware crashing? You're the first account I've heard of this. > > Yes, the correlation is very strong.
In this situation you've described, can you unload ath10k and reload to recover? > > > Also why are you putting it in /etc/modules rather than letting the udev > > rules load from modaliases? Or did you artificially prevent that in some > > way? > > No idea, with Ubuntu 17.10 there are log messages, that the module is > not loaded. So I thought adding it to `/etc/modules` will fix it. Should > the module smbios-dell be supported out of the box on Ubuntu 17.10? > It's only supposed to load when it's needed by another kernel module such as dell-laptop or dell-wmi. I suppose the messages you were seeing were related to the backends to dell-smbios (dell-smbios-wmi or dell-smbios-smm) not yet being initialized when a driver had requested to use an SMBIOS method. If you don't add it to /etc/modules I would expect that you'll find it's actually already loaded by the system when boot has completed.
