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francougo
n00b
Joined: 07 Oct 2021
Posts: 5
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 Posted: Thu Nov 04, 2021 12:53 am Post subject: bluetooth firmware won't load |
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I followed the wiki guide on how to set up bluetooth, but i wasn't able to pair with any device and scaning wouldn't work either. Tried dmesg and it seems like the correct firmware is not being detected
| Code: | dmesg | grep -i bluetooth
[ 1.148452] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is unblocked
[ 2.227984] usb 3-10: Product: Bluetooth Radio
[ 3.154371] Bluetooth: Core ver 2.22
[ 3.154384] Bluetooth: HCI device and connection manager initialized
[ 3.154388] Bluetooth: HCI socket layer initialized
[ 3.154391] Bluetooth: L2CAP socket layer initialized
[ 3.154393] Bluetooth: SCO socket layer initialized
[ 3.157724] Bluetooth: hci0: RTL: examining hci_ver=0b hci_rev=000a lmp_ver=0b lmp_subver=8852
[ 3.157725] Bluetooth: hci0: RTL: unknown IC info, lmp subver 8852, hci rev 000a, hci ver 000b
[ 3.157726] Bluetooth: hci0: RTL: assuming no firmware upload needed
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My bluetooth device is Realtek 8852 and i think it should load rtl8852au_fw.bin as the firmware because i booted from a manjaro liveCD, in which bluetooth worked properly, and it was loading that file as firmware.
Is there a way to detect which firmware to load in this case or do i need to manually load it myself?
Thanks in advance |
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54830
Location: 56N 3W
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| Posted: Fri Nov 05, 2021 8:38 pm Post subject: |
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francougo,
There is a few warts with kernel drivers with firmware.
The driver will load the firmware as a part of its initialisation.
That means that when the driver is configured as <*>, te be built into the kernel, the firmware must be built into the kernel too.
When the kernel driver is <M>, the firmware can be read from /lib/firmware.
The other two combinations fail by design.
If your boot media needed rtl8852au_fw.bin, Gentoo should too.
Its provided in linux-firmware.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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spica
Guru
Joined: 04 Jun 2021
Posts: 339
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| Posted: Fri Nov 05, 2021 9:33 pm Post subject: Re: bluetooth firmware won't load |
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| francougo wrote: | | Is there a way to detect which firmware to load |
In addition to Neddy's answer,
you can inspect the output of dmesg
in most cases if a driver can't load a firmware, there can be a message in dmesg | Code: | | dmesg | grep -iE 'firm|fail|err' |
This way you can make sure what file the driver attempts to load |
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francougo
n00b
Joined: 07 Oct 2021
Posts: 5
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| Posted: Tue Nov 09, 2021 5:31 pm Post subject: |
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I tried emerging git-sources kernel, i have the same options set for both versions but only the newer one works properly.
The output of dmesg when booting from the gentoo-sources kernel (version 5.10.74):
| Code: |
dmesg|grep -iE 'firm|fail|err'
[ 0.030454] ACPI: IRQ0 used by override.
[ 0.030455] ACPI: IRQ9 used by override.
[ 0.136295] ACPI: EC: interrupt blocked
[ 0.139644] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[ 0.157240] ACPI: Using IOAPIC for interrupt routing
[ 0.435196] ACPI: EC: interrupt unblocked
[ 0.543889] Loading firmware: i915/tgl_dmc_ver2_08.bin
[ 0.543903] i915 0000:00:02.0: Direct firmware load for i915/tgl_dmc_ver2_08.bin failed with error -2
[ 0.543905] i915 0000:00:02.0: [drm] Failed to load DMC firmware i915/tgl_dmc_ver2_08.bin. Disabling runtime power management.
[ 0.543908] i915 0000:00:02.0: [drm] DMC firmware homepage: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/i915
[ 0.578408] e1000e 0000:00:1f.6: Interrupt Throttling Rate (ints/sec) set to dynamic conservative mode
[ 1.110811] i801_smbus 0000:00:1f.4: SMBus using PCI interrupt
[ 1.157174] thinkpad_acpi: warning: userspace override of important firmware LEDs is enabled
[ 1.198395] Loading firmware: regulatory.db
[ 1.198403] platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
[ 1.198404] cfg80211: failed to load regulatory.db
[ 2.825114] psmouse serio2: trackpoint: Elan TrackPoint firmware: 0x11, buttons: 3/3
[ 3.475756] Bluetooth: hci0: RTL: assuming no firmware upload needed
[ 77.805434] Loading firmware: rtw89/rtw8852a_fw.bin
[ 77.813027] rtw89_pci 0000:09:00.0: Firmware version 0.13.8.0, cmd version 0, type 1
[ 77.813029] rtw89_pci 0000:09:00.0: Firmware version 0.13.8.0, cmd version 0, type 3
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This time i checked that all bluetooth drivers were built as modules and also tried including rtl8852au_config.bin and rtl8852au_fw.bin in the kernel which are the files loaded from both my boot media and the git-sources kernel (version 5.15), but it won't load the firmware.
I think maybe there is something wrong with this
| Code: |
[ 2.801917] Bluetooth: hci0: RTL: examining hci_ver=0b hci_rev=000a lmp_ver=0b lmp_subver=8852
[ 2.801919] Bluetooth: hci0: RTL: unknown IC info, lmp subver 8852, hci rev 000a, hci ver 000b
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Because that last line never shows up when running the other kernels |
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