Yes i see it in the schematics now. You are right.

Usually with rk3588 boards You connect the usb-c port with a usb - usb-c cable to the laptop usb-a port and flash it in maskrom mode.

My mistake was not to fully study the schematics. In the schematics i see the OTG port is wired to a USB 3 A port.

I had connected the usb-c to my computer with usb-c to usb A cable and did feed separately 12V to DCIN.

12V DC in is directly wired to the USB-C port pins. no reverse protection on the usb-c port.

I added now a diode similar to the DCIN diode. now can never happen again.
See attached image. this my change for future proof.Bildschirmfoto vom 2024-12-06 00-01-38.png

I will prepare a updated documentation and send it to You george in a private message so You can update the wiki page and the getting started page.

@berkaroad said in 分享被动散热改造:

改造后
环境温度： 20度 （室内温度计）
开机温度 ：31.5度
开机10分钟后温度：35.2度
测试chrome 浏览器播放腾讯视频1080p 1小时后温度：43.5度

Launch this test for 20 minutes please
https://openbenchmarking.org/test/pts/build-linux-kernel
https://github.com/phoronix-test-suite/phoronix-test-suite/

@jugg
CST时间和UTC时间的区别，并不是不能同步。也不是RTC不工作。系统层的问题百度一下。

@Kanade
建议切换到6.1的背个版本。默认的代码会生成一个头文件的包，解压到/usr目录即可。
https://github.com/coolpi-george/coolpi-kernel

@george 终于可以了，把系统删减到14个G，就可以用U盘拷贝了，但是使用脚本的方法还是不可以，后面再研究了。谢谢解答👍

@george 有集成最新NPU驱动的固件么？

@george
这是6.1的内核
已有的程序是不是都要重新编译 链接的第三方库也要更新吗

@jugg
如下命令就会生成头文件目录，拷贝到系统usr/src/linux-headers-5.10.110目录即可

make ARCH=arm64 headers_install INSTALL_HDR_PATH=out_headers/usr/src/linux-headers-5.10.110

@berkaroad That's sad.
Actually, Kernel 5.10 on the Armbian is quite okay.
But I dont know why when I tried Xonotic, it's very laggy.
I tried to install GPU support by following solution in the webboard.
But still got like 10 FPS.
So, I think updating the kernel could help.

@george 内核启动设置了ipv6.disable=1，今天发现wifi突然断开后无法重连，禁用wifi后再启用也无法恢复，重启电脑后正常。（新问题）

查看日志如下： journalctl -xeu wpa_supplicant

0b861056-7d55-461a-9708-aa20888f3808-Screenshot from 2024-11-04 20-33-42.png

补充一下
使用摄像头为 imx339

输入
gst-launch-1.0 v4l2src device=/dev/video20 ! image/jpeg, width=1920, height=1080, framerate=25/1 ! jpegparse ! mppjpegdec ! videoconvert ! fpsdisplaysink signal-fps-measurements=true sync=false
可达到60帧

加上sudo执行
sudo gst-launch-1.0 v4l2src device=/dev/video20 ! image/jpeg, width=1920, height=1080, framerate=25/1 ! jpegparse ! mppjpegdec ! videoconvert ! fpsdisplaysink signal-fps-measurements=true sync=false
只能达到22帧左右

@george Thanks a lot, I will contact the Aliexpress seller

@george It's coming back again.
Thank you so much.

@george that did it, wireguard works now, thanks

@george Thanks for your reply. Local videos from EMMC play well. I am talking about network videos in browser like youtube. Present driver and software ubuntu 24.04 (older kernel) uses almost 50% of CPU just to play a 1080p video. I have an Orange Pi 5b, that has same processor and GPU running orange pi droid (a version of android). That plays youtube videos with much less resources and runs much faster. I am looking for an android version to run on coolpi notebook. Where can I find that? (i have already tried armabian. but did not like that on coolpi laptop. Android for COM5 does not work)

@traceback 兄弟，问题解决了吗？我遇到了一样的问题，还不知怎么处理。