Bug #118055
IOVDEV-28879 【内部】【VC1】【0095】【台架】【EE环境】【副屏】【蓝牙】副屏偶现在正常操作时突然黑屏，点击屏幕没有反应，将副屏的电源掉电重启后副屏显示恢复正常
| Status: | CLOSED | Start date: | 2023-05-18 | |
|---|---|---|---|---|
| Priority: | High | Due date: | ||
| Assignee: | CDTS_TEST 王成 | % Done: | 100% | |
| Category: | BSP | |||
| Target version: | - | |||
| Need_Info: | -- | Found Version: | 01.00.0095.c103 | |
| Resolution: | -- | Degrated: | -- | |
| Severity: | Critical | Verified Version: | ||
| Reproducibility: | Frequently | Fixed Version: | ||
| Test Type: | Free Test | Root cause: | 屏厂上电问题 |
Description
环境信息】EE环境
【问题出现时间】：20230517 19：33
【前提条件】：副屏上电
【操作步骤】
1.正常操作
【实际结果】
1.副屏黑屏，点击无反应
【期望结果】
1.副屏正常进入主界面
【备注】：
第128次开机
目前是第一次遇到
日志地址：https://ofs.human-horizons.com/#/download/index/guFcQiesLfI%3D
【应用版本】：
【硬件版本号】：
【中控版本号】：03.02.0080.c101
【副屏版本号】：01.00.0095.c103
History
#1 Updated by CDTS-TEST 周婷 about 2 years ago
- Category set to BSP
- Assignee set to CD BSP-杜磊
#2 Updated by CD BSP-杜磊 about 2 years ago
- File all_log.zip added
- Status changed from New to ASSIGNED
根据000128_kernel_00002_230517_193258.log分析：
通过查找显示相关的关键字，发现显示DTC相关的错误：
308:05-17 19:33:55.107 0 0 E DTC_Display: Abnormal power down or data-cable disconnect(0x16)
310:05-17 19:33:55.107 0 0 E : [MAX975X:max96755g_write_bytes] ERROR i2c master send 0x80 err
312:05-17 19:33:55.211 0 0 E : [MAX975X:max96755x_vc1_lcd_dtc_check] ERROR Failed to read dev:0x15 addr:0x80
314:05-17 19:33:55.211 0 0 E : [MAX975X:max96755g_write_bytes] ERROR i2c master send 0x85 err
317:05-17 19:33:55.523 0 0 E DTC_Display: Abnormal voltage: 0mV
328:05-17 19:33:57.291 0 0 I : [MAX975X:max96755x_init] INFO read:752 0x13:da
329:05-17 19:33:57.291 0 0 I : [MAX975X:max96755x_init] INFO read:755 0x13:de
330:05-17 19:33:57.292 0 0 I : [MAX975X:max96755x_init] INFO read:752 0x48 0x0d03: 8f
331:05-17 19:33:57.350 0 0 I : [MAX975X:max96755x_touch_init] INFO VC1 GPIO Pass
332:05-17 19:33:57.350 0 0 I : [MAX975X:max96755g_software_reset] INFO do touch reset
339:05-17 19:33:57.351 0 0 E : [MAX975X:max96755g_software_reset] ERROR Finshed to reset lcm and tp....
LCD显示屏上报了屏端电压异常的DTC log，电压异常值为0V, 触发了副屏控制端重新连接的机制，尝试恢复，恢复机制执行正常没有报任何错误，但是显示屏依然无显示。
308:05-17 19:33:55.107 0 0 E DTC_Display: Abnormal power down or data-cable disconnect(0x16)
317:05-17 19:33:55.523 0 0 E DTC_Display: Abnormal voltage: 0mV
此问题需要屏厂帮忙分析电压异常的原因
PS:
在lcd和副屏控制器单独供电开机的情况下，给副屏重新上电，副屏端均能正常恢复，且正常显示
#3 Updated by CD BSP-杜磊 about 2 years ago
- Assignee changed from CD BSP-杜磊 to CDTS-TEST 周婷
- % Done changed from 0 to 30
#4 Updated by CD BSP-杜磊 about 2 years ago
DTC的值主机端读回来的，只读，为什么会有异常，以及回读的值和屏端不一致，需要屏端分析
#5 Updated by CDTS-TEST 周婷 about 2 years ago
- Assignee changed from CDTS-TEST 周婷 to CD BSP-余霄
需跟踪屏端结果
#6 Updated by CD BSP-余霄 about 2 years ago
- File 1.png added
- Status changed from ASSIGNED to RESOLVED
- Assignee changed from CD BSP-余霄 to CDTS_TEST 王成
- % Done changed from 30 to 100
- Root cause set to 屏厂上电问题
该问题已在客户群沟通，屏厂上电方式存在问题，已达成一致。
#8 Updated by CDTS_TEST 王成 about 2 years ago
- Status changed from VERIFIED to CLOSED