L5.10.72_2.2.0-desktop GA:when Ubuntu system is set to automatic login,the sound card will crash.

[juan_tang]

Hi,

Refer to the L5.10.72_2.2.0-desktop user guide to build and install Ubuntu on 8mplus platform，I tested on the imx8mplus EVK board and found that When Ubuntu is set to automatic login(modity   /etc/gdm3/custom.conf , set AutomaticLoginEnable = true) ,In the kernel phase, sdma_transfer_init  will be crashed when loading audio driver ,Pls check the log as below:

.............................................................................

  Mar 24 07:42:54 kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000

        Mar 24 07:42:54 kernel: Mem abort info:

        Mar 24 07:42:54 kernel:   ESR = 0x96000044

        Mar 24 07:42:54 kernel:   EC = 0x25: DABT (current EL), IL = 32 bits

        ..... 

        Mar 24 07:42:55 kernel: Call trace:

        Mar 24 07:42:55 kernel:  sdma_transfer_init+0x130/0x260

        Mar 24 07:42:55 kernel:  sdma_prep_dma_cyclic+0x80/0x298

        Mar 24 07:42:55 kernel:  snd_dmaengine_pcm_trigger+0xec/0x188

        Mar 24 07:42:55 kernel:  dmaengine_pcm_trigger+0x18/0x28

.............................................................................

In the system desktop phase,the system can’t play sound, I try to enter "settings" option, both sound option ”output device“ and ”input device“ are shown as nothing(no audio device message) .

Pls help to check the issue,Many thanks!

[Zhiming_Liu · Accepted solution]

Hi all,

Patch has been attached.

[juan_tang]

@Zhiming_Liu  Good news it work now.Many thanks for your support!

[Zhiming_Liu]

Hi @juan_tang 

Reproduced, pending internal.

[juan_tang]

HI,@nxf65025

I tested the four versions in the figure below, only L5.10.9_1.0.0-desktop-alpha did not have the problem. But  all customers used GA release of BSP not alpha&beta release of BSP,I really hope to have a patch fix as soon as possible。Many thanks!

[sunlihong]

hi nxf65025,

when will this bug be fixed? 

[josephzhou1]

watching 

[sunlihong]

hello, how about the result?