Alexander van der Leun <a...@vdleun.net> writes:

> On Tue, Nov 09, 2021 at 02:49:55PM +0100, Alexander van der Leun wrote:
>> Hi Dekks Herton,
>> 
>> On Tue, Nov 09, 2021 at 05:44:08AM +0000, Dekks Herton wrote:
>> > 3 - This Chromebook uses an old Intel CPU based on Braswell which Intel 
>> > recently
>> > rewrote the sound driver to use Intel_captpt driver. Is the soundcard
>> > using captpt or snd_hda_intel?
>> 
>> The soundcard uses snd_hda_intel. The current kernel 5.14.0-2-amd64 seems 
>> not to
>> have a module named captpt. Where can I read more about this rewrite? A 
>> Google
>> search doesn't seem to come up with much.
>
> Found the mentioned driver, snd_soc_catpt, but cannot seem to get it to work.
> Also blacklisted the snd_hda_intel and rt5650 drivers. But still no output
> in the kernel logs or aplay -l finding sound cards.
>
> Does this driver really work on this hardware:
>
> # lshw
> linuxbook                   
>     description: Laptop
>     product: Banon
>     vendor: GOOGLE
>     version: 1.0
>     width: 64 bits
>     capabilities: smbios-3.3.0 dmi-3.3.0 smp vsyscall32
>     configuration: boot=normal chassis=laptop family=Intel_Strago
>   *-core
>        description: Motherboard
>        product: Banon
>        vendor: GOOGLE
>        physical id: 0
>        version: 1.0
>      *-firmware
>           description: BIOS
>           vendor: coreboot
>           physical id: 0
>           version: MrChromebox-4.14
>           date: 07/25/2021
>           size: 1MiB
>           capacity: 8MiB
>           capabilities: pci pcmcia upgrade bootselect acpi
>      *-cpu
>           description: CPU
>           product: Intel(R) Celeron(R) CPU  N3060  @ 1.60GHz
>           vendor: Intel Corp.
>           physical id: 4
>           bus info: cpu@0
>           version: 6.76.4
>           slot: CPU0
>           size: 580MHz
>           capacity: 2480MHz
>           width: 64 bits
>           capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 
> apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht 
> tm pbe syscall nx rdtscp x86-64 constant_tsc arch_perfmon pebs bts rep_good 
> nopl xtopology tsc_reliable nonstop_tsc cpuid aperfmperf tsc_known_freq pni 
> pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 
> sse4_2 movbe popcnt tsc_deadline_timer aes rdrand lahf_lm 3dnowprefetch epb 
> pti ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid tsc_adjust smep 
> erms dtherm ida arat md_clear cpufreq
>           configuration: cores=2 enabledcores=2 microcode=1041 threads=2

Hi Alexander,

Ive got my Braswell and Broadwell mixed up, Broadwell is PC chip,
Braswell is SoC based of Silvermont, catpt won't help in this case.

Sorry.

Regards.....

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