Bug #118183
【IOVISSUE-6954】【IOVISSUE-8052】【VC1】【试驾问题】【副屏】副驾显示屏背光关闭策略和仪表中控不一样
| Status: | CLOSED | Start date: | 2023-05-23 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | 2023-05-26 | |
| Assignee: | CDTS_TEST 王成 | % Done: | 0% | |
| Category: | 黑屏 | |||
| Target version: | - | |||
| Need_Info: | -- | Found Version: | 客户未填写 | |
| Resolution: | WONTFIX | Degrated: | -- | |
| Severity: | Critical | Verified Version: | ||
| Reproducibility: | Every time | Fixed Version: | 2023-05-26 | |
| Test Type: | ST | Root cause: | 控制器异常掉电，由屏端处理 |
Description
【问题描述】:副驾显示屏背光关闭策略和仪表中控不一样
【软件/网络环境】：EE环境
【IDCM版本】：IDCM 03.02.0080.C101
【试驾人】：杜林林
【实车VIN】： LJD8BB3F2P0000700
【数采仪编号】：0300124
【发生日期 & 时间】：2023/05/16/18：50
【问题来源】：VC1 路试问题跟踪
在台架上屏幕和主板分开供电，主板关机后可以观察到副屏背光亮
History
#1 Updated by CDTS_TEST 王成 about 2 years ago
- File 1684826591377.zip added
#2 Updated by CD TPM-王祥林 about 2 years ago
- Assignee changed from CD TPM-王祥林 to CD BSP-余霄
解压密码：000700
#3 Updated by CD TPM-王祥林 about 2 years ago
从日志里发现18：50有三次下电操作，副屏会进行关机。但不知道是哪一次屏幕背光没有关闭。
从Android侧的日志发现每次收到下电信号都有先息屏和关机的操作。可能其中一次出现了屏幕背光没有关的问题。
下一步，需要进一步调查kernel里在关机完成之前是否正确关闭了屏幕背光。
//MPU收到MCU关机指令
05-16 18:26:08.670 2281 2429 D ProtectUartService: received uart notiy mpu to shutdown
//进行灭屏操作
05-16 18:26:08.857 1204 1597 V DisplayPowerController0: Brightness [0.0] reason changing to: 'screen_off', previous reason: 'manual'.
05-16 18:26:08.857 1204 1551 I DisplayDeviceRepository: Display device changed state: "内置屏幕", OFF
//MPU收到MCU关机指令
05-16 18:34:10.937 2259 2395 D ProtectUartService: received uart notiy mpu to shutdown
//进行灭屏操作
05-16 18:34:11.118 1206 1585 V DisplayPowerController0: Brightness [0.0] reason changing to: 'screen_off', previous reason: 'manual'.
05-16 18:34:11.119 1206 1540 I DisplayDeviceRepository: Display device changed state: "内置屏幕", OFF
//MPU收到MCU关机指令
05-16 19:09:48.835 2779 2918 D ProtectUartService: received uart notiy mpu to shutdown
//进行灭屏操作
05-16 19:09:49.015 1509 1634 V DisplayPowerController0: Brightness [0.0] reason changing to: 'screen_off', previous reason: 'manual'.
05-16 19:09:49.015 913 913 D SurfaceFlinger: Setting power mode 0 on display 4630946816427681409
05-16 19:09:49.016 1509 1611 I DisplayDeviceRepository: Display device changed state: "内置屏幕", OFF
#4 Updated by CDTS_Test 吴诗雨 about 2 years ago
- Fixed Version set to 2023-05-26
#5 Updated by CDTS_TEST 王成 about 2 years ago
- Due date set to 2023-05-26
#6 Updated by CDTS-TEST 周婷 about 2 years ago
- Category changed from BSP to 黑屏
#7 Updated by CD BSP-余霄 about 2 years ago
已和VC1供应商沟通，通过心跳包来控制背光。
如果超时，则屏端自行关闭背光，防止异常掉电,VC1控制器无法下发I2C背光指令
#8 Updated by CD BSP-杜磊 about 2 years ago
- Status changed from New to ASSIGNED
根据附件的log发现，
只有亮屏的调用，没有灭屏调用
亮屏：
[MAX975X:max96755x_drm_notifier_callback] INFO receives BLANK: UNBLANK
#9 Updated by CD TPM-王祥林 about 2 years ago
分析结论：
2023-05-16-18_53_33左右，从数据采集仪上屏幕的亮屏时间可以看出，本次上电时间只有12秒左右。
所以这个问题是由于副屏上电后还未完成开机，短时间（12秒）内就下电，导致副屏控制器断电，系统无法走正常的关机流程，无法及时通知到屏幕进行灭屏导致的。
下一步计划：
已和VC1供应商沟通，通过心跳包来控制背光。如果超时，则屏端自行关闭背光，防止异常掉电,VC1控制器无法下发I2C背光指令
#10 Updated by CD TPM-王祥林 about 2 years ago
- Status changed from ASSIGNED to RESOLVED
- Assignee changed from CD BSP-余霄 to CDTS_TEST 王成
- Resolution changed from -- to WONTFIX
- Root cause set to 控制器异常掉电，由屏端处理
分析结论：
2023-05-16-18_53_33左右，从数据采集仪上屏幕的亮屏时间可以看出，本次上电时间只有12秒左右。
所以这个问题是由于副屏上电后还未完成开机，短时间（12秒）内就下电，导致副屏控制器断电，系统无法走正常的关机流程，无法及时通知到屏幕进行灭屏导致的。
下一步计划：
和屏厂讨论策略，如果屏幕收到下电信号后，控制器没有给屏幕关闭背光的信号，就自行关闭背光。
#11 Updated by CDTS_TEST 王成 about 2 years ago
- Subject changed from 【IOVISSUE-6954】【VC1】【试驾问题】【副屏】副驾显示屏背光关闭策略和仪表中控不一样 to 【IOVISSUE-6954】【IOVISSUE-8052】【VC1】【试驾问题】【副屏】副驾显示屏背光关闭策略和仪表中控不一样
#12 Updated by CD TEST-方永红 about 2 years ago
- Status changed from RESOLVED to VERIFIED
#13 Updated by CD TEST-方永红 about 2 years ago
- Status changed from VERIFIED to CLOSED