[Xiaomi Mi 9 Questions & Answers] kamicki:
Hello again,

I just found a file called "mcrash_history" on MIUI. With following contents:

2021-10-27_11-27-54 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-26_19-04-08 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-26_18-09-23 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-26_18-05-51 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-26_17-35-51 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-26_17-05-39 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-26_15-58-25 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-26_09-53-09 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-26_09-42-03 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-25_18-03-54 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-25_07-27-34 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-25_06-36-48 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-25_06-19-19 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-25_06-17-54 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-25_05-05-42 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-23_16-11-43 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-23_07-55-04 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-23_07-40-25 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-22_19-21-27 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-22_18-23-51 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-22_07-32-19 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-20_19-44-52 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-20_19-36-18 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-19_18-32-32 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-19_18-31-12 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-19_07-55-51 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-18_18-34-34 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-18_08-53-44 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-18_08-43-16 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-18_08-11-14 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-18_08-06-29 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-17_18-22-04 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-16_13-38-06 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-15_16-36-07 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-15_16-26-58 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-15_08-10-16 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-15_08-06-36 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-15_07-34-33 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_13-57-48 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_13-55-09 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_13-49-11 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_10-53-52 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_10-48-41 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_10-34-02 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_10-28-11 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_10-23-02 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_10-09-31 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_10-08-41 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_10-05-11 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-14_09-50-29 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-11_12-15-44 err_inject_crash.c:403:Crash injected via Diag
2021-10-11_12-14-44 err_inject_crash.c:403:Crash injected via Diag
2021-10-11_12-10-39 err_inject_crash.c:403:Crash injected via Diag
2021-10-11_12-09-12 err_inject_crash.c:403:Crash injected via Diag
2021-10-11_11-58-50 err_inject_crash.c:403:Crash injected via Diag
2021-10-11_11-56-37 err_inject_crash.c:403:Crash injected via Diag
2021-10-11_11-55-45 err_inject_crash.c:403:Crash injected via Diag
2021-10-11_11-54-37 err_inject_crash.c:403:Crash injected via Diag
2021-10-11_11-45-21 err_inject_crash.c:403:Crash injected via Diag
2021-10-10_15-10-54 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-10_14-37-39 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-10_14-21-59 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-10_14-19-55 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-10_14-17-18 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-10_14-00-13 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-10_13-55-09 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-10_13-36-25 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-10_12-41-09 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-10_11-12-11 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-10_07-44-12 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-09_13-33-11 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-09_13-25-43 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-09_13-23-53 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-09_12-12-28 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-09_12-03-38 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-08_18-56-07 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-08_12-31-50 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai
2021-10-08_10-05-30 lte_ml1_dlm_common_if.c:715:Assert (r1280_present && r1430_present) == FALSE fai

So, the modem crash still happens on a regular basis. It just doesn't reboot the phone on MIUI.