A few weeks ago I got an old laptop and installed Ubuntu 22.04 LTS on it. When I suspend the machine and wake it back up, the WIFI won't connect (looks like it tries to connect to a SSID but can't).
When I cut the power by shutting down and powering back up, everything is back to normal.
When I reboot the machine instead, it boots and says it doesn't have any WIFI drivers enabled.
All relevant power saving settings in BIOS are deactivated.
Here is the lshw -C network output for
when it all works:
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 0c
serial: a0:1d:48:a8:2b:df
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.19.0-38-generic firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=twisted pair
resources: irq:18 ioport:3000(size=256) memory:d0600000-d0600fff memory:d0400000-d0403fff
*-network
description: Wireless interface
product: MT7630e 802.11bgn Wireless Network Adapter
vendor: MEDIATEK Corp.
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlo1
version: 00
serial: fc:4d:d4:56:2c:ac
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=mt76x0e driverversion=5.19.0-38-generic firmware=1.0.07-b370 ip=192.168.43.226 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:19 memory:d0500000-d05fffff
After suspension (WIFI coming up but not able to connect):
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 0c
serial: a0:1d:48:a8:2b:df
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.19.0-38-generic firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=twisted pair
resources: irq:18 ioport:3000(size=256) memory:d0600000-d0600fff memory:d0400000-d0403fff
*-network
description: Wireless interface
product: MT7630e 802.11bgn Wireless Network Adapter
vendor: MEDIATEK Corp.
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlo1
version: 00
serial: fc:4d:d4:56:2c:ac
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=mt76x0e driverversion=5.19.0-38-generic firmware=1.0.07-b370 latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:19 memory:d0500000-d05fffff
After reboot after suspension (driver missing):
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 0c
serial: a0:1d:48:a8:2b:df
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=5.19.0-38-generic firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=twisted pair
resources: irq:18 ioport:3000(size=256) memory:d0600000-d0600fff memory:d0400000-d0403fff
*-network UNCLAIMED
description: Network controller
product: MT7630e 802.11bgn Wireless Network Adapter
vendor: MEDIATEK Corp.
physical id: 0
bus info: pci@0000:04:00.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress cap_list
configuration: latency=0
resources: memory:d0500000-d05fffff
Additional information:
I have tried going back to 20.04 and even briefly tried Linux Mint, the issue is the same on all Linux distributions, it is not an issue when I boot into windows.
