深海游弋的鱼 – 默默的点滴

Visual Studio Code调试Flutter报错“[CHROME]:need to run as root or suid”

在最新的 Ubuntu 22.04 系统上使用Visual Studio Code调试Flutter应用，Chrome使用Snap安装。

通过指定 CHROME_EXECUTABLE=/snap/bin/chromium，在调试的时候，报错如下：

Launching lib/main.dart on Chrome in debug mode...
lib/main.dart:1
[CHROME]:need to run as root or suid
Failed to launch browser after 3 tries. Command used to launch it: /snap/bin/chromium --user-data-dir=/tmp/flutter_tools.SEVTFD/flutter_tools_chrome_device.AMHTFX --remote-debugging-port=38457 --disable-background-timer-throttling --disable-extensions --disable-popup-blocking --bwsi --no-first-run --no-default-browser-check --disable-default-apps --disable-translate http://localhost:42407
Failed to launch browser. Make sure you are using an up-to-date Chrome or Edge. Otherwise, consider using -d web-server instead and filing an issue at https://github.com/flutter/flutter/issues.
Exited (sigterm)

Launching lib/main.dart on Chrome in debug mode...

lib/main.dart:1

[CHROME]:need to run as root or suid

Failed to launch browser after 3 tries. Command used to launch it: /snap/bin/chromium --user-data-dir=/tmp/flutter_tools.SEVTFD/flutter_tools_chrome_device.AMHTFX --remote-debugging-port=38457 --disable-background-timer-throttling --disable-extensions --disable-popup-blocking --bwsi --no-first-run --no-default-browser-check --disable-default-apps --disable-translate http://localhost:42407

Failed to launch browser. Make sure you are using an up-to-date Chrome or Edge. Otherwise, consider using -d web-server instead and filing an issue at https://github.com/flutter/flutter/issues.

Exited (sigterm)

解决方法就是指定真实的Chrome安装路径，直接调用，而不是通过Snap的沙箱，解决沙箱无法调试的问题。

如下：

#export CHROME_EXECUTABLE=/snap/bin/chromium
export CHROME_EXECUTABLE=/snap/chromium/current/usr/lib/chromium-browser/chrome

1 2	#export CHROME_EXECUTABLE=/snap/bin/chromium export CHROME_EXECUTABLE=/snap/chromium/current/usr/lib/chromium-browser/chrome

上述方法同样可以解决 Android Studio 在 Ubuntu 22.04 系统上无法找到 Chrome 的问题。

参考链接

How to get the snap-based chromium to access a separately mounted filesystem?

SSH默认不支持RSA了

今天升级ubuntu 22.04/Window 11后最基本的ssh登陆突然出问题了, 提示有几种:

Unable to negotiate with UNKNOWN port 65535: no matching host key type found. Their offer: ssh-rsa,ssh-dss
lost connection

sign_and_send_pubkey: no mutual signature supported

Unable to negotiate with UNKNOWN port 65535: no matching host key type found. Their offer: ssh-rsa,ssh-dss

lost connection

sign_and_send_pubkey: no mutual signature supported

Git Pull failed
  Unable to negotiate with xx.xx.xx.xx port 22: no matching host key type found. Their offer: ssh-rsa,ssh-dss
   Could not read from remote repository.
   Please make sure you have the correct access rights
   and the repository exists.

Git Pull failed

Unable to negotiate with xx.xx.xx.xx port 22: no matching host key type found. Their offer: ssh-rsa,ssh-dss

Could not read from remote repository.

Please make sure you have the correct access rights

and the repository exists.

一查发现…好嘛, openssh觉得ssh-rsa加密方式不安全, 直接从8.8开始默认不允许这种密钥用于登陆了…

解决方法是可以在~/.ssh/config里面加这么一段解决:

Host *
    PubkeyAcceptedKeyTypes +ssh-rsa
    HostKeyAlgorithms +ssh-rsa

Host *

PubkeyAcceptedKeyTypes +ssh-rsa

HostKeyAlgorithms +ssh-rsa

第一行说明对所有主机生效, 第二行是将 ssh-rsa 加会允许使用的范围, 第三行是指定所有主机使用的都是 ssh-rsa 算法的key。

实测两行都得要写才行, 没有第二行提示没有 ssh-rsa 这么个类型

没有第三行就提示 sign_and_send_pubkey: no mutual signature supported。

参考链接

ssh默认不支持rsa了

解决远程桌面执行sudo启动X应用报错“Gtk-WARNING **: 12:39:47.296: cannot open display: :10.0”

通过远程桌面（RDP）连接到远程Ubuntu服务器桌面，执行调用X窗口应用的时候，报错如下：

$ sudo update-manager
No protocol specified
Unable to init server: Could not connect: Connection refused
No protocol specified
Unable to init server: 无法连接： Connection refused
No protocol specified
Unable to init server: 无法连接： Connection refused

(update-manager:2547): Gtk-WARNING **: 12:39:47.296: cannot open display: :10.0

$ sudo update-manager

No protocol specified

Unable to init server: Could not connect: Connection refused

No protocol specified

Unable to init server: 无法连接： Connection refused

No protocol specified

Unable to init server: 无法连接： Connection refused

(update-manager:2547): Gtk-WARNING **: 12:39:47.296: cannot open display: :10.0

原因为：

XServer默认情况下不允许别的用户的图形程序的图形显示在当前屏幕上。

如果需要别的用户的图形显示在当前屏幕上，则应以当前登陆的用，也就是切换身份前的用户执行如下命令。

当前登陆普通用户执行：xhost +

$ xhost +
access control disabled, clients can connect from any host

$ sudo update-manager

$ xhost +

access control disabled, clients can connect from any host

$ sudo update-manager

参考链接

Ubuntu gedit报错Gtk-WARNING **: cannot open display: 问题解决

一	二	三	四	五	六	日
				1	2	3
4	5	6	7	8	9	10
11	12	13	14	15	16	17
18	19	20	21	22	23	24
25	26	27	28	29	30