• 0 Votes
    5 Posts
    366 Views
    G

    @plumlis
    This method has been tried before, and as you said, the actual effect can be seen in the Ubuntu system. However, if it is a system with kylin and uos, it must always run in performance mode to run smoothly. We will re evaluate whether to update to the existing kernel configuration. Thank you for your suggestion.

  • Intel AX200 / 210 working on laptop?

    PI CM5 Laptop
    4
    0 Votes
    4 Posts
    366 Views
    G

    @plumlis
    The testing before AX210 was problematic. The most basic BT cannot recognize it, it seems that the firmware version of WIFI is incorrect.

  • Firefox deb version freezed when try to play video

    PI CM5 Laptop
    31
    0 Votes
    31 Posts
    2k Views
    G

    @plumlis
    FFmpeg can be changed to a native package. Or using the Chromium browser, the decoding issue of this player has been bothering us for a long time. Take some time later to focus on solving it.

  • Fix "Disable Touchpad while typing" not working

    PI CM5 Laptop
    1
    1 Votes
    1 Posts
    302 Views
    No one has replied
  • RTC battery on board?

    PI CM5 Laptop
    5
    0 Votes
    5 Posts
    376 Views
    G

    @plumlis
    The battery of the RTC connector has a spacing of 0.8mm. From the current phenomenon, it is not that the hardware RTC cannot save time, but rather that the hardware RTC time has not been synchronized with the system. So adding this battery won't make any changes.

  • 多内核

    Pi 4B
    2
    0 Votes
    2 Posts
    514 Views
    G

    @happyday
    以下结果来自大模型:
    在Linux中,可以通过多种方式将应用程序绑定到特定的CPU上执行,这样可以减少上下文切换,提高性能。以下是一些常用的方法:

    使用 taskset 命令:
    taskset 命令可以用来限制一个进程只能使用指定的CPU或CPU集合。使用以下命令启动一个应用程序并将其绑定到特定的CPU:

    taskset -c 0,1,2 my_application
    这将允许 my_application 只在CPU 0、1和2上运行。

    使用 nice 和 renice 命令:
    nice 命令可以在启动时设置一个进程的调度优先级,而 renice 可以更改一个已经运行的进程的优先级。这不是直接绑定CPU,但可以影响进程的调度。

    nice -n 10 --adjustment=+5 my_application
    使用 cgroups:
    cgroups(控制组)是一种Linux内核特性,它可以将进程分组,并为这些组应用特定的系统资源限制。通过 cgroups,你可以将进程绑定到特定的CPU。

    首先,创建一个新的cgroup:

    sudo cgcreate -g cpuset:/my_group
    然后,添加CPU到这个cgroup:

    sudo echo 0-2 > /sys/fs/cgroup/cpuset/my_group/cpuset.cpus
    接下来,将应用程序添加到这个cgroup:

    sudo cgclassify -g cpuset:my_group my_application
    使用 numactl 命令:
    numactl 命令用于控制NUMA(非统一内存访问)系统中的CPU和内存亲和性。它也可以用于将进程绑定到特定的CPU。

    numactl --physcpubind=0,1,2 my_application
    使用 sched_setaffinity 系统调用:
    在编程时,可以使用 sched_setaffinity 系统调用来设置进程的CPU亲和性。这需要在编写应用程序时进行设置。

    使用 top 或 htop 工具:
    在使用 top 或 htop 时,可以通过交互式命令将进程绑定到特定的CPU。在 htop 中,可以使用 ~ 键来切换“CPU绑定”模式,然后选择CPU。

    编辑 /etc/security/limits.conf:
    对于基于System V的进程控制,可以在 limits.conf 文件中设置CPU亲和性。

    请注意,绑定CPU可能会影响系统的调度器性能,并且不是所有的应用程序都会从CPU绑定中受益。在进行CPU绑定之前,应该仔细考虑应用程序的需求和系统的整体性能。

  • Fedora system image? EDK2 UEFI support?

    PI CM5 Laptop
    3
    1 Votes
    3 Posts
    492 Views
    plumlisP

    @george
    Nice, I'll waitting for good news.

  • Cool pi Laptop v20 初步印象

    PI CM5 Laptop
    1
    1 Votes
    1 Posts
    305 Views
    No one has replied
  • Other sellers of this laptop.

    PI CM5 Laptop
    4
    0 Votes
    4 Posts
    315 Views
    G

    @yaitoro
    Yes, this is the official store address.

  • 内核问题

    Pi 4B
    5
    0 Votes
    5 Posts
    574 Views
    J

    @happyday cpu内核运行有上下文,颗粒调度,你要独占一个核,也可以绑定操作

  • 0 Votes
    2 Posts
    628 Views
    J

    @markerrors 有完整可复现过程?

  • 0 Votes
    4 Posts
    2k Views
    T

    @traceback
    I found the solution in github:
    FirstSecond

  • Default cpufreq driver: cpufreq-dt or cpufreq-rockchip

    PI CM5 Laptop
    3
    0 Votes
    3 Posts
    506 Views
    G

    @plumlis
    对,就是这个地方,自行修改就好了。

  • 设备树问题

    Pi 4B
    6
    0 Votes
    6 Posts
    722 Views
    G

    @happyday
    需要从github下载代码到机器,然后修改,编译,替换。

  • dwhdmi 错误

    Pi CM5
    4
    0 Votes
    4 Posts
    625 Views
    J

    @george
    插拔了几次 也清理了一下 还是一样的结果 但是不会频繁的输出i2c read err 就是HDMI还是没有输出 只是开机画面有 dmesg 变成这个了
    f316cd12-84c5-46a5-9402-4332f788375c-image.png
    我这个是V10的核心板 底板是最近才买的新底板

  • Laptop install Ubuntu on nvme

    Ubuntu
    22
    0 Votes
    22 Posts
    2k Views
    plumlisP

    @Momo-0 Thank for your reply.
    I think the point is pcie 3.0 /4.0
    maybe pcie 3.0 version nvme ssd should be okay.

  • Coolpi Ubuntu 24.04 is coming soon!!

    PI CM5 Laptop
    17
    2 Votes
    17 Posts
    2k Views
    M

    How to update to 6.x kernel?
    I tried to compile this
    https://github.com/yanyitech/coolpi-kernel/tree/linux-6.1-stan-rkr1
    Next I install kernel according to the instructions
    https://forum.cool-pi.com/topic/514/cool-pi-cm5-laptop-linux-quick-start-guide

    5.10 installed successfully but after install 6.1 it's does not booted

  • Connecting a dsi display

    Pi CM5
    6
    0 Votes
    6 Posts
    1k Views
    A

    @george
    Could you help? does it give this error when connecting?
    [ 8.515533] dw-mipi-dsi2 fde20000.dsi: [drm:dw_mipi_dsi2_bind] ERROR Failed to find panel or bridge: -517

  • CM5使用U盘刷机失败

    Pi CM5
    9
    0 Votes
    9 Posts
    1k Views
    J

    @Twsuts-0 备份还原搞定了吗

  • 准备使用Coolpi 4b连Raspberry Pi HQ Camera M12

    Pi 4B
    9
    0 Votes
    9 Posts
    902 Views
    M

    @george
    收到,谢谢!
    香橙派的好像是4lan的