Dear Mario,
Am 08.02.2018 um 05:57 schrieb Mario.Limonciello@xxxxxxxx:
-----Original Message-----
From: Paul Menzel [mailto:pmenzel+platform-driver-x86@xxxxxxxxxxxxx]
Sent: Wednesday, February 7, 2018 3:41 AM
To: Limonciello, Mario <Mario_Limonciello@xxxxxxxx>
Cc: Pali Rohár <pali.rohar@xxxxxxxxx>; it+platform-driver-x86@xxxxxxxxxxxxx;
platform-driver-x86@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
Subject: Re: dell-smbios makes wireless card unusable on Dell XPS 13 9360
On 02/06/18 20:51, Mario.Limonciello@xxxxxxxx wrote:
-----Original Message-----
From: platform-driver-x86-owner@xxxxxxxxxxxxxxx [mailto:platform-driver-x86-
owner@xxxxxxxxxxxxxxx] On Behalf Of Paul Menzel
Sent: Tuesday, February 6, 2018 10:08 AM
To: Limonciello, Mario <Mario_Limonciello@xxxxxxxx>
Cc: Pali Rohár <pali.rohar@xxxxxxxxx>; it+platform-driver-x86@xxxxxxxxxxxxx;
platform-driver-x86@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
Subject: Re: dell-smbios makes wireless card unusable on Dell XPS 13 9360
On 02/06/18 16:58, Mario.Limonciello@xxxxxxxx wrote:
-----Original Message-----
From: Paul Menzel [mailto:pmenzel+platform-driver-x86@xxxxxxxxxxxxx]
Sent: Tuesday, February 6, 2018 9:50 AM
To: Pali Rohár <pali.rohar@xxxxxxxxx>; Limonciello, Mario
<Mario_Limonciello@xxxxxxxx>; it+platform-driver-x86@xxxxxxxxxxxxx
Cc: platform-driver-x86@xxxxxxxxxxxxxxx; Linux Kernel Mailing List <linux-
kernel@xxxxxxxxxxxxxxx>
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 0x05030000chip_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?
No, I unloaded ath10k_pci, and that takes a few seconds, and also shows
the Linux error messages in the log. Loading it again, there are also
Linux error messages, and the wireless does *not* work again.
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.
Yes, it looks like it gets loaded after I removed it from `/etc/modules`.
Still, that behavior should not happen. Could you reproduce it? Is it
actually a ath10k_pci bug, and their maintainers should be added?
Kind regards,
Paul
