Please remove "iommu=off" and see if it helps...
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1887623
Title:
Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter [168c:0042]
Subsystem [1028:1810] not detected on Ubuntu 20.04
Status in linux package in Ubuntu:
Incomplete
Bug description:
I am using Ubuntu 20.04 on Dell 5575 with AMD Ryzen 5. WiFi was
working during installation and after the I updated recent, it stopped
working.
lspci | grep Atheros
03:00.0 Network controller: Qualcomm Atheros QCA9377 802.11ac Wireless
Network Adapter (rev 31)
dmesg errors
[ 5.627332] ath10k_core_register_work+0x26/0x120 [ath10k_core]
[ 5.627355] ath10k_pci 0000:03:00.0: unable to get target info from device
[ 5.627358] ath10k_pci 0000:03:00.0: could not get target info (-5)
[ 5.627373] ath10k_pci 0000:03:00.0: could not probe fw (-5)
have tried using older kernel 5.4.0-26 but that didn't help.
I had to add this to grub, "nomodeset iommu=off" as it wasn't booting.
sudo lspci -vnvn > lspci-vnvn.log
pcilib: sysfs_read_vpd: read failed: Input/output error
lsb_release -rd
Description: Ubuntu 20.04 LTS
Release: 20.04
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: poonam 1564 F.... pulseaudio
/dev/snd/controlC0: poonam 1564 F.... pulseaudio
CasperMD5CheckResult: skip
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-07-13 (1 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
IwConfig:
lo no wireless extensions.
enp2s0 no wireless extensions.
MachineType: Dell Inc. Inspiron 5575
Package: linux (not installed)
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-40-generic
root=UUID=72998a7f-f0f6-4782-b447-785cc101a1ac ro quiet splash nomodeset
iommu=off vt.handoff=7
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
RelatedPackageVersions:
linux-restricted-modules-5.4.0-40-generic N/A
linux-backports-modules-5.4.0-40-generic N/A
linux-firmware 1.187.1
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
Tags: focal
Uname: Linux 5.4.0-40-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 10/31/2019
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.3.3
dmi.board.asset.tag: not specified
dmi.board.name: 0M0Y6P
dmi.board.vendor: Dell Inc.
dmi.board.version: X01
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 1.3.3
dmi.modalias:
dmi:bvnDellInc.:bvr1.3.3:bd10/31/2019:svnDellInc.:pnInspiron5575:pvr1.3.3:rvnDellInc.:rn0M0Y6P:rvrX01:cvnDellInc.:ct10:cvr1.3.3:
dmi.product.family: Inspiron
dmi.product.name: Inspiron 5575
dmi.product.sku: 0812
dmi.product.version: 1.3.3
dmi.sys.vendor: Dell Inc.
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