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    • G

      CAN bus testing tools and commands
      • george

      1
      0
      Votes
      1
      Posts
      196
      Views

      No one has replied

    • G

      Coolpi support 32GB of RAM
      • george

      20
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      Votes
      20
      Posts
      1205
      Views

      G

      @Mz3D-0 Both CP4 and CM5 already support 32G/256G configurations and can be purchased directly from an agent.

    • J

      Cool pi 4b的spiflash有替代的吗,现在这个都停产了,板子上的flash烧了,有替代的flash换吗
      • JohnConnor

      7
      0
      Votes
      7
      Posts
      497
      Views

      G

      @JohnConnor 飞线可以。

    • J

      coolpi4B 8822BU网卡 对比测试raspi4B 8821CU网卡
      • jugg

      10
      0
      Votes
      10
      Posts
      684
      Views

      J

      @george

      驱动里面可以这样改 系统里面怎么改?默认就关闭电源管理
    • J

      内核更新失败 开机停在logo界面
      • jugg

      8
      0
      Votes
      8
      Posts
      473
      Views

      J

      @jugg said in 内核更新失败 开机停在logo界面:

      @大法师
      没刷最新的loader
      我又试了一块板 按照更新的步骤 sync 了之后 断电重启 还是不行 驱动那里还是空的

      还真的是要sync 不能直接断电重启

    • J

      系统崩溃
      • jugg

      7
      0
      Votes
      7
      Posts
      325
      Views

      J

      @george
      这个需要怎么测?什么命令?

    • E

      Pi-4B板子的MIPI接口只能支持2-lane模式?
      • elf

      5
      0
      Votes
      5
      Posts
      373
      Views

      G

      @elf
      IMX219
      https://m.tb.cn/h.UEn5Tbe?tk=vJdxdL2wsjZ
      OV5647
      https://m.tb.cn/h.UDYh0TE?tk=FUwydL2x1L

    • J

      CoolPi 4B支持USB网卡吗?
      • JohnConnor

      36
      0
      Votes
      36
      Posts
      1296
      Views

      J

      @大法师
      哦 就是用的时候才会加载

    • D

      Unsolved coolpi 4B GPU(Mali-G610)支持的OpenCL 2.2版本在哪可以下载?
      • diudiutong

      9
      0
      Votes
      9
      Posts
      572
      Views

      G

      @大法师 目前没有单独OpenCL2.2的版本,正常3.0是可以向下兼容2.2.

    • D

      Unsolved coolpi 4B安装的是Ubuntu20.04系统,clinfo命令无gpu信息,怎么回事?
      • diudiutong

      1
      0
      Votes
      1
      Posts
      181
      Views

      No one has replied

    • F

      如何利用opencv调用mipi摄像头?
      • flyman

      3
      0
      Votes
      3
      Posts
      242
      Views

      G

      @flyman 默认的节点是video11

    • J

      coolpi 4b内存扩容为32G是否需要更换引导程序?
      • JohnConnor

      4
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      Votes
      4
      Posts
      327
      Views

      G

      @JohnConnor 可以更换,loader需要更新到最新版本。

    • Q

      4b串口扩展问题
      • qys2022

      5
      0
      Votes
      5
      Posts
      313
      Views

      J

      @qys2022 是的。也可以直接在板子上编译测试。
      wiki.cool-pi.com

    • J

      ubuntu 0306 有时桌面卡死
      • jugg

      24
      0
      Votes
      24
      Posts
      785
      Views

      T

      @george 是的,并不影响播放视频,我运行Qt程序只要全屏也会一直输出这个,我把它屏蔽好了

    • 大法师

      Coolpi 4b user guide for developer
      • 大法师

      5
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      Votes
      5
      Posts
      1081
      Views

      J

      @murraytodd thanks!

    • Q

      安装位置问题
      • qys2022

      2
      0
      Votes
      2
      Posts
      196
      Views

      大法师

      @qys2022
      相同的

      wiki有结构图纸参考
      https://wiki.cool-pi.com/en/home

    • J

      ubuntu 录屏问题
      • jugg

      11
      0
      Votes
      11
      Posts
      492
      Views

      J

      @大法师
      加了确实可以录
      只是CPU使用率太高了 200% 300%了

    • Q

      ubuntu驱动问题
      • qys2022

      2
      0
      Votes
      2
      Posts
      214
      Views

      G

      @qys2022 可以的。

    • Q

      12V供电一个建议
      • qys2022

      3
      0
      Votes
      3
      Posts
      253
      Views

      G

      @qys2022 CM5的底板已经支持12V供电,4b只能通过测试点焊接座子。

    • 零

      Coolpi 4b怎么刷写Ubuntu mate(20)的系统?
      • 零度灬救赎

      2
      0
      Votes
      2
      Posts
      235
      Views

      大法师

      @零度灬救赎
      树莓派的系统不能直接使用。可以用我们提供的ubuntu系统镜像(gnome桌面)

    • M

      Micro DisplayPort question
      • murraytodd

      3
      0
      Votes
      3
      Posts
      184
      Views

      G

      @murraytodd Insert your DP cable and print the mesg upload.

    • P

      Coolpi 4B not booting!
      • Pharizna

      3
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      Votes
      3
      Posts
      181
      Views

      G

      @Pharizna Please upgrade the loader to the latest version, format EMMC or TF card, and remake the boot image.

    • G

      A Method for Dynamically Hiding the Status Bar on Android 11
      • george

      1
      0
      Votes
      1
      Posts
      194
      Views

      No one has replied

    • 老

      请问如何让Android Studio显示该运行设备呢?
      • 老衲法号蛋哥

      7
      0
      Votes
      7
      Posts
      241
      Views

      老

      @jack_admin 重新刷固件以后已成功解决,感谢

    • 1

      请教这个板子电源用多大的合适呢?
      • 1103854485

      2
      0
      Votes
      2
      Posts
      202
      Views

      J

      @1103854485
      参考
      https://www.cool-pi.com/topic/140/请问coolpi-4b-电源输入功率多大合适-有电流保护吗

    • G

      Coolpi 4b driver eDP LCD
      • george

      1
      0
      Votes
      1
      Posts
      164
      Views

      No one has replied

    • C

      Coolpi 4b real time preempt_rt patches.
      • coolpicnc

      2
      0
      Votes
      2
      Posts
      141
      Views

      J

      @coolpicnc
      Maybe you can try to use a similar kernel version.

      https://cdn.kernel.org/pub/linux/kernel/projects/rt/5.10/older/

    • M

      Cool-pi 4b case
      • Mz3D 0

      8
      0
      Votes
      8
      Posts
      352
      Views

      M

      @jack_admin thanks!

    • M

      Questions before buy
      • Mz3D 0

      2
      0
      Votes
      2
      Posts
      186
      Views

      G

      @Mz3D-0

      Can support mesa GPU driver, compatible with X11 WAYLAND Currently maximum 128 G, more than 128 G need to be customized, such as 256 G.
    • E

      提个Power键的操作建议
      • edwardzhou

      2
      0
      Votes
      2
      Posts
      186
      Views

      J

      @edwardzhou 有这个功能,长按硬关机。如果是ubuntu系统可以配置电源键功能,按一次关机(可以设置忽略60s计时)。关机后再按一次即可开机

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