** Also affects: linux-raspi (Ubuntu Impish)
Importance: Undecided
Status: New
** Changed in: linux-raspi (Ubuntu Impish)
Status: New => Invalid
** Changed in: linux-raspi (Ubuntu Hirsute)
Status: New => In Progress
** Changed in: linux-raspi (Ubuntu Groovy)
Status: New => In Progress
** Changed in: linux-raspi (Ubuntu Focal)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1927037
Title:
ath9k driver: miniPCIe Atheros AR93xx not recognized
Status in linux-raspi package in Ubuntu:
Invalid
Status in linux-raspi source package in Focal:
In Progress
Status in linux-raspi source package in Groovy:
In Progress
Status in linux-raspi source package in Hirsute:
In Progress
Status in linux-raspi source package in Impish:
Invalid
Bug description:
[Impact]
PCIe cards based on ath9k chips are not recognized.
[Test Case]
Plug a ath9k based PCIe card into the PCIe slot of a CM4 IO board and:
$ ls /sys/class/net/wlan0
ls: cannot access '/sys/class/net/wlan0': No such file or directory
[Where Problems Could Occur]
Buggy driver could result in crashes.
[Original Description]
Expected behavior:
Network adapter should be visible via `iw list`, `iwconfig`, and `ifconfig`.
Actual behavior:
Network adapter is visible in `lspci` and `lshw`, but not in `iw list`,
`iwconfig`, or `ifconfig`
Details:
The Atheros network card is detected by the ath9k driver when installed into
a machine with x86_64 architecture. When the same card is installed into a
miniPCIe-to-PCIe adapter, then plugged into a Raspberry Pi CM4 IO breakout
board, the network adapter can be seen via lspci and lshw but is not seen by
iw, iwconfig, or ifconfig.
lspci:
ubuntu@ubuntu:~$ sudo lspci -v
00:00.0 PCI bridge: Broadcom Inc. and subsidiaries Device 2711 (rev 20)
(prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 41
Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
I/O behind bridge: 00000000-00000fff [size=4K]
Memory behind bridge: f8000000-f80fffff [size=1M]
Prefetchable memory behind bridge: [disabled]
Capabilities: [48] Power Management version 3
Capabilities: [ac] Express Root Port (Slot-), MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [180] Vendor Specific Information: ID=0000 Rev=0 Len=028 <?>
Capabilities: [240] L1 PM Substates
Kernel driver in use: pcieport
01:00.0 Network controller: Qualcomm Atheros AR93xx Wireless Network Adapter
(rev 01)
Subsystem: Qualcomm Atheros AR93xx Wireless Network Adapter
Flags: fast devsel, IRQ 255
Memory at 600000000 (64-bit, non-prefetchable) [disabled] [size=128K]
Expansion ROM at 600020000 [virtual] [disabled] [size=64K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/4 Maskable+ 64bit+
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [300] Device Serial Number 00-00-00-00-00-00-00-00
-----
lshw:
ubuntu@ubuntu:~$ sudo lshw -c net
*-network UNCLAIMED
description: Network controller
product: AR93xx Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:01:00.0
version: 01
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress cap_list
configuration: latency=0
resources: memory:600000000-60001ffff memory:600020000-60002ffff
*-network
description: Ethernet interface
physical id: 1
logical name: eth0
serial: dc:a6:32:f4:69:36
size: 1Gbit/s
capacity: 1Gbit/s
capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd
1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=bcmgenet
driverversion=v2.0 duplex=full ip=REDACTED link=yes multicast=yes port=MII
speed=1Gbit/s
-----
iw list/iwconfig:
ubuntu@ubuntu:~$ iw list
ubuntu@ubuntu:~$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
-----
ubuntu@ubuntu:~$ lsb_release -rd
Description: Ubuntu 20.04.2 LTS
Release: 20.04
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-1034-raspi 5.4.0-1034.37
ProcVersionSignature: User Name 5.4.0-1034.37-raspi 5.4.101
Uname: Linux 5.4.0-1034-raspi aarch64
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: arm64
CasperMD5CheckResult: skip
Date: Tue May 4 02:59:25 2021
ImageMediaBuild: 20210201.1
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C.UTF-8
SHELL=/bin/bash
SourcePackage: linux-raspi
UpgradeStatus: No upgrade log present (probably fresh install)
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