Ubuntu sudo Error:unable to resolve host

本文解决在更改Ubuntu系统名称后遇到的UbuntusudoError:unabletoresolvehost的问题,通过修改/etc/hostname和/etc/hosts文件来解决。

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新装的ubunut系统总是遇见
Ubuntu sudo Error:unable to resolve host

是因为可能修改了系统名
我把系统名从star-ubuntu改为ubuntu(/etc/hostname)
同时要把hosts中对应的star-ubuntu(/etc/hosts)改掉就行了
unning kernel seems to be up-to-date. No services need to be restarted. No containers need to be restarted. No user sessions are running outdated binaries. No VM guests are running outdated hypervisor (qemu) binaries on this host. [1] 14461 Error: unable to open display :1 root@srv771551:~# The XKEYBOARD keymap compiler (xkbcomp) reports: > Warning: Could not resolve keysym XF86CameraAccessEnable > Warning: Could not resolve keysym XF86CameraAccessDisable > Warning: Could not resolve keysym XF86CameraAccessToggle > Warning: Could not resolve keysym XF86NextElement > Warning: Could not resolve keysym XF86PreviousElement > Warning: Could not resolve keysym XF86AutopilotEngageToggle > Warning: Could not resolve keysym XF86MarkWaypoint > Warning: Could not resolve keysym XF86Sos > Warning: Could not resolve keysym XF86NavChart > Warning: Could not resolve keysym XF86FishingChart > Warning: Could not resolve keysym XF86SingleRangeRadar > Warning: Could not resolve keysym XF86DualRangeRadar > Warning: Could not resolve keysym XF86RadarOverlay > Warning: Could not resolve keysym XF86TraditionalSonar > Warning: Could not resolve keysym XF86ClearvuSonar > Warning: Could not resolve keysym XF86SidevuSonar > Warning: Could not resolve keysym XF86NavInfo Errors from xkbcomp are not fatal to the X server # 查看详细的DRM初始 查看详细的DRM初始化日志 sudo dmesg | grep -iE 'drm|i915|amdgpu|nouveau' # 强制重新加载图形模块(以Intel为例) sudo rmmod i915 sudo modprobe i915 debug=1 [ 8.488129] ACPI: bus type drm_connector registered [ 11.694958] systemd[1]: Starting modprobe@drm.service - Load Kernel Module drm... rmmod: ERROR: Module i915 is not currently loaded modprobe: FATAL: Module i915 not found in directory /lib/modules/6.8.0-60-generic root@srv771551:~# # 检查物理显示接口状态 sudo apt install edid-decode -y sudo cat /sys/class/drm/card0-DP-1/edid | edid-decode # 检测显示端口热插拔状态 grep -H . /sys/class/drm/*/status Reading package lists... Done Building dependency tree... Done Reading state information... Done The following NEW packages will be installed: edid-decode 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 134 kB of archives. After this operation, 350 kB of additional disk space will be used. Get:1 http://in.archive.ubuntu.com/ubuntu noble/universe amd64 edid-decode amd64 0.1~git20220315.cb74358c2896-1.1 [134 kB] Fetched 134 kB in 1s (126 kB/s) Selecting previously unselected package edid-decode. (Reading database ... 104591 files and directories currently installed.) Preparing to unpack .../edid-decode_0.1~git20220315.cb74358c2896-1.1_amd64.deb ... Unpacking edid-decode (0.1~git20220315.cb74358c2896-1.1) ... Setting up edid-decode (0.1~git20220315.cb74358c2896-1.1) ... Processing triggers for man-db (2.12.0-4build2) ... Scanning processes... Scanning linux images... Running kernel seems to be up-to-date. No services need to be restarted. No containers need to be restarted. No user sessions are running outdated binaries. No VM guests are running outdated hypervisor (qemu) binaries on this host. cat: /sys/class/drm/card0-DP-1/edid: No such file or directory EDID of 'stdin' was empty. grep: /sys/class/drm/*/status: No such file or directory root@srv771551:~# # 使用LLVMpipe软件渲染 sudo apt install mesa-utils -y LIBGL_ALWAYS_SOFTWARE=1 glxinfo | grep "OpenGL renderer" # 验证CPU渲染能力 MESA_GL_VERSION_OVERRIDE=4.5 glxgears Reading package lists... Done Building dependency tree... Done Reading state information... Done mesa-utils is already the newest version (9.0.0-2). 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. OpenGL renderer string: llvmpipe (LLVM 19.1.1, 256 bits) The XKEYBOARD keymap compiler (xkbcomp) reports: > Warning: Could not resolve keysym XF86CameraAccessEnable > Warning: Could not resolve keysym XF86CameraAccessDisable > Warning: Could not resolve keysym XF86CameraAccessToggle > Warning: Could not resolve keysym XF86NextElement > Warning: Could not resolve keysym XF86PreviousElement > Warning: Could not resolve keysym XF86AutopilotEngageToggle > Warning: Could not resolve keysym XF86MarkWaypoint > Warning: Could not resolve keysym XF86Sos > Warning: Could not resolve keysym XF86NavChart > Warning: Could not resolve keysym XF86FishingChart > Warning: Could not resolve keysym XF86SingleRangeRadar > Warning: Could not resolve keysym XF86DualRangeRadar > Warning: Could not resolve keysym XF86RadarOverlay > Warning: Could not resolve keysym XF86TraditionalSonar > Warning: Could not resolve keysym XF86ClearvuSonar > Warning: Could not resolve keysym XF86SidevuSonar > Warning: Could not resolve keysym XF86NavInfo Errors from xkbcomp are not fatal to the X server 6622 frames in 5.0 seconds = 1324.350 FPS 5306 frames in 5.0 seconds = 1061.041 FPS 6476 frames in 5.0 seconds = 1295.068 FPS 7356 frames in 5.0 seconds = 1471.104 FPS 7530 frames in 5.0 seconds = 1505.943 FPS 7202 frames in 5.0 seconds = 1440.160 FPS 6918 frames in 5.0 seconds = 1383.580 FPS 6448 frames in 5.0 seconds = 1289.433 FPS 6896 frames in 5.0 seconds = 1379.091 FPS 7166 frames in 5.0 seconds = 1433.100 FPS
05-29
CH341A编程器是一款广泛应用的通用编程设备,尤其在电子工程和嵌入式系统开发领域中,它被用来烧录各种类型的微控制器、存储器和其他IC芯片。这款编程器的最新版本为1.3,它的一个显著特点是增加了对25Q256等32M芯片的支持。 25Q256是一种串行EEPROM(电可擦可编程只读存储器)芯片,通常用于存储程序代码、配置数据或其他非易失性信息。32M在这里指的是存储容量,即该芯片可以存储32兆位(Mbit)的数据,换算成字节数就是4MB。这种大容量的存储器在许多嵌入式系统中都有应用,例如汽车电子、工业控制、消费电子设备等。 CH341A编程器的1.3版更新,意味着它可以与更多的芯片型号兼容,特别是针对32M容量的芯片进行了优化,提高了编程效率和稳定性。26系列芯片通常指的是Microchip公司的25系列SPI(串行外围接口)EEPROM产品线,这些芯片广泛应用于各种需要小体积、低功耗和非易失性存储的应用场景。 全功能版的CH341A编程器不仅支持25Q256,还支持其他大容量芯片,这意味着它具有广泛的兼容性,能够满足不同项目的需求。这包括但不限于微控制器、EPROM、EEPROM、闪存、逻辑门电路等多种类型芯片的编程。 使用CH341A编程器进行编程操作时,首先需要将设备通过USB连接到计算机,然后安装相应的驱动程序和编程软件。在本例中,压缩包中的"CH341A_1.30"很可能是编程软件的安装程序。安装后,用户可以通过软件界面选择需要编程的芯片类型,加载待烧录的固件或数据,然后执行编程操作。编程过程中需要注意的是,确保正确设置芯片的电压、时钟频率等参数,以防止损坏芯片。 CH341A编程器1.3版是面向电子爱好者和专业工程师的一款实用工具,其强大的兼容性和易用性使其在众多编程器中脱颖而出。对于需要处理25Q256等32M芯片的项目,或者26系列芯片的编程工作,CH341A编程器是理想的选择。通过持续的软件更新和升级,它保持了与现代电子技术同步,确保用户能方便地对各种芯片进行编程和调试。
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