https://help.ubuntu.com/community/ReportingBugs建议使用ubuntu-bug buggy-package-name来报告错误。但是，就我而言，默认浏览器 Firefox 受到该错误的影响，在打开时崩溃。
我如何覆盖ubuntu-bug启动哪个浏览器来完成错误报告？Chrome 可以正常工作，我正在用它写这篇文章。我不想永久更改默认浏览器，直到问题解决为止。我在 Kubuntu 上运行 Wayland 会话（尝试返回 X11，但错误仍然存在）
在 24.04 上，某些 ID 无法运行 ocrmypdf。例外是执行 sudo apt install ocrmypdf 的 ID，它运行正常。运行 sudo ocrmypdf 也有效。为什么除了执行 sudo apt install 的 ID 之外，其他 ID 都无法运行？22.04 系统上的所有 ID 都可以运行 ocrmypdf。
表示失败的文本字符串如下：
An exception occurred while executing the pipeline _sync.py:473
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/ocrmypdf/_sync.py", line
409, in run_pipeline
optimize_messages = exec_concurrent(context, executor)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/ocrmypdf/_sync.py", line
315, in exec_concurrent
pdf, messages = post_process(pdf, context, executor)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/ocrmypdf/_sync.py", line
247, in post_process
return optimize_pdf(pdf_out, context, executor)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/ocrmypdf/_pipeline.py", line
1009, in optimize_pdf
output_pdf, messages =
context.plugin_manager.hook.optimize_pdf(
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^
File "/usr/lib/python3/dist-packages/pluggy/_hooks.py", line 501,
in __call__
return self._hookexec(self.name, self._hookimpls.copy(),
kwargs, firstresult)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/pluggy/_manager.py", line
119, in _hookexec
return self._inner_hookexec(hook_name, methods, kwargs,
firstresult)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^
File "/usr/lib/python3/dist-packages/pluggy/_callers.py", line
138, in _multicall
raise exception.with_traceback(exception.__traceback__)
File "/usr/lib/python3/dist-packages/pluggy/_callers.py", line
102, in _multicall
res = hook_impl.function(*args)
^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/usr/lib/python3/dist-packages/ocrmypdf/builtin_plugins/optimize.p
y", line 151, in optimize_pdf
'jbig2': jbig2enc.available(),
^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3/dist-packages/ocrmypdf/_exec/jbig2enc.py",
line 22, in available
version()
File "/usr/lib/python3/dist-packages/ocrmypdf/_exec/jbig2enc.py",
line 17, in version
return Version(get_version('jbig2', regex=r'jbig2enc
(\d+(\.\d+)*).*'))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
^^^^^^^
File
"/usr/lib/python3/dist-packages/ocrmypdf/subprocess/__init__.py",
line 159, in get_version
proc = run(
^^^^
File
"/usr/lib/python3/dist-packages/ocrmypdf/subprocess/__init__.py",
line 63, in run
proc = subprocess_run(args, env=env, check=check, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/subprocess.py", line 548, in run
with Popen(*popenargs, **kwargs) as process:
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/subprocess.py", line 1026, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "/usr/lib/python3.12/subprocess.py", line 1955, in
_execute_child
raise child_exception_type(errno_num, err_msg, err_filename)
PermissionError: [Errno 13] Permission denied: 'jbig2'
我一直在使用 wine，但效果不太好所以我将其删除了。
之后 Wine 的 7-zip 仍然存在于gnome-menus（应用程序菜单）我该如何解决这个问题
我已从存储库中删除wine安装。我已从自己的存储库中main删除winehq-stablewinehq
如果我输入sudo apt-get remove --purge wine winehq-stable
它说：
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package 'wine' is not installed, so not removed
Package 'winehq-stable' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
我该如何修复它？
我想使用自定义分区设置安装 Ubuntu 22.04 LTS，包括一个加密的根分区和一个 8 GiB 的交换分区。默认的 Ubuntu 安装程序不允许我设置自定义交换大小。我该怎么做才能实现这一点？
$ snap list
snap: error while loading shared libraries: libxcb.so.1: cannot open shared object file: No such file or directory
$ whereis libxcb.so.1
libxcb.so.1: /usr/lib/x86_64-linux-gnu/libxcb.so.1
$ which snap
/usr/bin/snap
$ sha256sum /bin/snap
06d498c41a5bf2f4d836fb50ff02749c82297fd3e74e41d78bb089292158be5a /bin/snap
$ file /bin/snap
/bin/snap: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, Go BuildID=_XiLSmroeRJA5Uo8zvaX/rt3gXAZzIqOiI-Q_dmRd/7eHWjLhhkgUrQ7Kb9WkR/V-DYZbbtce--vU_MTNt2, stripped
$ strace -o trace.out /usr/bin/snap list
$ grep -C5 'libxcb.so.1' trace.out
mmap(NULL, 1297704, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fee906c3000
mmap(0x7fee906dc000, 589824, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19000) = 0x7fee906dc000
mmap(0x7fee9076c000, 585728, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa9000) = 0x7fee9076c000
mmap(0x7fee907fb000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x138000) = 0x7fee907fb000
close(3) = 0
openat(AT_FDCWD, "/usr/lib/cuda/include/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/lib/cuda/lib64/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/local/lib/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "glibc-hwcaps/x86-64-v3/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "glibc-hwcaps/x86-64-v2/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libxcb.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\0\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=170600, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fee90b5b000
mmap(NULL, 172680, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fee90b30000
mmap(0x7fee90b3c000, 81920, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xc000) = 0x7fee90b3c000
--
mmap(NULL, 1297704, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7bdda3e93000
mmap(0x7bdda3eac000, 589824, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19000) = 0x7bdda3eac000
mmap(0x7bdda3f3c000, 585728, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa9000) = 0x7bdda3f3c000
mmap(0x7bdda3fcb000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x138000) = 0x7bdda3fcb000
close(3) = 0
openat(AT_FDCWD, "/snap/snapd/current/usr/lib/x86_64-linux-gnu/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/lib/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/snap/snapd/current/usr/lib/glibc-hwcaps/x86-64-v3/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/snapd/current/usr/lib/glibc-hwcaps/x86-64-v3", 0x7ffc475173a0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/snap/snapd/current/usr/lib/glibc-hwcaps/x86-64-v2/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/snapd/current/usr/lib/glibc-hwcaps/x86-64-v2", 0x7ffc475173a0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/snap/snapd/current/usr/lib/tls/haswell/x86_64/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/snapd/current/usr/lib/tls/haswell/x86_64", 0x7ffc475173a0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/snap/snapd/current/usr/lib/tls/haswell/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/snapd/current/usr/lib/tls/haswell", 0x7ffc475173a0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/snap/snapd/current/usr/lib/tls/x86_64/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/snapd/current/usr/lib/tls/x86_64", 0x7ffc475173a0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/snap/snapd/current/usr/lib/tls/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/snapd/current/usr/lib/tls", 0x7ffc475173a0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/snap/snapd/current/usr/lib/haswell/x86_64/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/snapd/current/usr/lib/haswell/x86_64", 0x7ffc475173a0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/snap/snapd/current/usr/lib/haswell/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/snapd/current/usr/lib/haswell", 0x7ffc475173a0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/snap/snapd/current/usr/lib/x86_64/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/snapd/current/usr/lib/x86_64", 0x7ffc475173a0, 0) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/snap/snapd/current/usr/lib/libxcb.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
newfstatat(AT_FDCWD, "/snap/snapd/current/usr/lib", {st_mode=S_IFDIR|0755, st_size=130, ...}, 0) = 0
writev(2, [{iov_base="/usr/bin/snap", iov_len=13}, {iov_base=": ", iov_len=2}, {iov_base="error while loading shared libra"..., iov_len=36}, {iov_base=": ", iov_len=2}, {iov_base="libxcb.so.1", iov_len=11}, {iov_base=": ", iov_len=2}, {iov_base="cannot open shared object file", iov_len=30}, {iov_base=": ", iov_len=2}, {iov_base="No such file or directory", iov_len=25}, {iov_base="\n", iov_len=1}], 10) = 124
exit_group(127) = ?
+++ exited with 127 +++
已经尝试重新安装：
sudo apt install --reinstall snapd && sudo snap refresh
但无济于事。
Ubuntu 24.10
有什么想法吗？
知道为什么某些 .jpg 会以 QGIS 形式显示缩略图吗？如何修复？
我正在使用 PCManFM-Qt 1.4.1，在 Lubuntu 20.04 上也遇到过类似的问题。在全新安装的 Lubuntu 24.04 上仍然出现此问题。
我已经设置了默认打开程序，它工作正常，
qgis
中的file --mime-type IMG_20250302_093435.jpg显示仅在
我删除的下，以防万一
显示有条目- 不知道它是否表示有什么不好image/jpeg~/.config/mimeapps.listapplication/geo+json=org.qgis.qgis.desktop; and application/json=org.qgis.qgis.desktop;/home/mateusz/.cache/thumbnailsxdg-mime query default image/jpegorg.gnome.eog.desktop
exiftool IMG_20250302_093435.jpgThumbnail Image : (Binary data 49792 bytes, use -b option to extract)
exiftool -b -ThumbnailImage IMG_20250302_093435.jpg > extracted_thumbnail.jpg提取 100% 精细图像
我没有禁用缩略图。
EFI我最近在一张完全空的微型 SD 卡上安装了 lubuntu 24.04。安装程序要求我执行手动分区，在此阶段，它建议我创建具有以下特征的分区非常重要：
EFI为分区选择挂载点非常重要/boot/efi。这篇文章证实了我的选择，但没有解释为什么需要创建EFI分区。
安装程序说lubuntu 需要一个 EFI 分区，但另一条消息说如果没有EFI分区，系统可能无法启动；所以该EFI分区似乎不是强制性的。
另一篇文章说，如果缺少EFI分区并且系统中没有安装任何其他引导加载程序，则所有已安装的操作系统都无法启动。
是否必须存在 EFI 分区（FAT32、300MB、安装在/boot/efi）才能正确启动 lubuntu 24.04？
几个月前，我在我的两台机器上从 20.04 LTS 升级到了 22.04 LTS；我在 /boot 中看到了以下内容：
total 275864
drwxr-xr-x 5 root root 4096 Feb 26 06:51 .
drwxr-xr-x 20 root root 4096 Sep 29 2014 ..
-rw-r--r-- 1 root root 262228 Feb 7 12:44 config-5.15.0-133-generic
-rw-r--r-- 1 root root 287013 Jan 15 11:27 config-6.8.0-52-generic
drwx------ 2 root root 4096 Dec 31 1969 efi
drwxr-xr-x 4 root root 4096 Feb 26 06:51 grub
lrwxrwxrwx 1 root root 29 Feb 26 06:48 initrd.img -> initrd.img-5.15.0-133-generic
-rw-r--r-- 1 root root 114000628 Feb 26 06:49 initrd.img-5.15.0-133-generic
-rw-r--r-- 1 root root 125713060 Feb 18 06:35 initrd.img-6.8.0-52-generic
lrwxrwxrwx 1 root root 27 Feb 26 06:48 initrd.img.old -> initrd.img-6.8.0-52-generic
drwx------ 2 root root 16384 Nov 26 2020 lost+found
-rw-r--r-- 1 root root 182800 Feb 6 2022 memtest86+.bin
-rw-r--r-- 1 root root 184476 Feb 6 2022 memtest86+.elf
-rw-r--r-- 1 root root 184980 Feb 6 2022 memtest86+_multiboot.bin
-rw------- 1 root root 6295053 Feb 7 12:44 System.map-5.15.0-133-generic
-rw------- 1 root root 8667805 Jan 15 11:27 System.map-6.8.0-52-generic
lrwxrwxrwx 1 root root 26 Feb 26 06:48 vmlinuz -> vmlinuz-5.15.0-133-generic
-rw------- 1 root root 11711400 Feb 7 13:12 vmlinuz-5.15.0-133-generic
-rw------- 1 root root 14928264 Jan 15 11:51 vmlinuz-6.8.0-52-generic
lrwxrwxrwx 1 root root 24 Feb 26 06:48 vmlinuz.old -> vmlinuz-6.8.0-52-generic
uname -r 返回：
6.8.0-52-generic
执行 sudo apt update 和 upgrade 时，版本 5.15 已更新（执行了 sudo apt autoremove 以删除旧版本，上面未显示）。知道为什么更新了这些内容吗？vmlinuz.old 指的是 6.8.0-52，但我当前的内核是 6.8.0-52？
我正在编写一个小型 Python 模块，用于控制使用Cypress CY7C65631 (EZ-USB HX2LP) 芯片的 USB HUB。它所在的电路板有用于 VBUS 控制的外部 IC（所有启用和过流信号都连接到 HUB IC）和 GPIO Expander，让我可以监控上述线路上设置的逻辑值。
它运行在 Ubuntu 20.04.6 LTS 上，内核为 5.8（由 x86 主板制造商提供）。集线器由 PyUSB 的 ctrl 传输控制。与集线器的通信正常，系统正确识别集线器：
:~$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 04b4:6560 Cypress Semiconductor Corp. CY7C65640 USB-2.0 "TetraHub"
Bus 001 Device 017: ID 0781:55b1 SanDisk Corp. Dell KB216 Wired Keyboard
Bus 001 Device 003: ID 04b4:6560 Cypress Semiconductor Corp. CY7C65640 USB-2.0 "TetraHub"
Bus 001 Device 002: ID 413c:2113 Dell Computer Corp. Dell KB216 Wired Keyboard
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
为了测试目的，我将一个 U 盘（包含一些数据）连接到其中一个端口。我现在想要实现的是：
当我尝试进行上述测试时，我可以观察到端口已正确关闭，但一段时间后（时间会有所不同，但一般在 0.5 秒到 2 秒之间）端口又打开了。我怀疑这与 USB 驱动程序或负责 USB 设备电源管理的内核模块有关，但我不知道它到底是什么以及如何禁用它（或更改我控制端口的方式）。
我从测试中删除了第 3 点，首先验证我是否能够成功关闭端口。以下是我用来运行测试的日志和部分代码。
Hub 的描述符：
:~$ lsusb -vvv -d 04b4:6560
Bus 001 Device 003: ID 04b4:6560 Cypress Semiconductor Corp. CY7C65640 USB-2.0 "TetraHub"
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 1 Single TT
bMaxPacketSize0 64
idVendor 0x04b4 Cypress Semiconductor Corp.
idProduct 0x6560 CY7C65640 USB-2.0 "TetraHub"
bcdDevice 9.15
iManufacturer 0
iProduct 2 EXTERNAL USB HUB
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0019
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 174mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0001 1x 1 bytes
bInterval 12
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 4
wHubCharacteristic 0x0089
Per-port power switching
Per-port overcurrent protection
TT think time 8 FS bits
Port indicators
bPwrOn2PwrGood 50 * 2 milli seconds
bHubContrCurrent 100 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0503 highspeed power enable connect
Port 3: 0000.0100 power
Port 4: 0000.0100 power
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
bNumConfigurations 1
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0001
Self Powered
测试相关的部分dmesg（端口断电瞬间）：
usb 1-3.2: USB disconnect, device number 16
[ +0.763930] usb 1-3.2: new high-speed USB device number 17 using xhci_hcd
[ +0.102990] usb 1-3.2: New USB device found, idVendor=0781, idProduct=55b1, bcdDevice= 1.10
[ +0.000009] usb 1-3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ +0.000005] usb 1-3.2: Product: SanDisk 3.2 Gen1
[ +0.000004] usb 1-3.2: Manufacturer: SanDisk
[ +0.000004] usb 1-3.2: SerialNumber: A20019FE2628A724
[ +0.001528] usb-storage 1-3.2:1.0: USB Mass Storage device detected
[ +0.000650] scsi host2: usb-storage 1-3.2:1.0
[ +1.012410] scsi 2:0:0:0: Direct-Access SanDisk SanDisk 3.2 Gen1 DL17 PQ: 0 ANSI: 6
[ +0.000876] sd 2:0:0:0: Attached scsi generic sg0 type 0
[ +0.000414] sd 2:0:0:0: [sda] 126124032 512-byte logical blocks: (64.6 GB/60.1 GiB)
[ +0.000524] sd 2:0:0:0: [sda] Write Protect is off
[ +0.000006] sd 2:0:0:0: [sda] Mode Sense: 45 00 00 00
[ +0.000618] sd 2:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ +0.082726] sda: sda1 sda2
[ +0.002845] sd 2:0:0:0: [sda] Attached SCSI removable disk
测试代码的部分内容：
# b is the instance of the object abstracing the connected board
port_num = 2
print(b.external_usb_hub.get_port_status(port_num))
b.external_usb_hub.set_port_power(port_num, is_up=False)
print(b.external_usb_hub.get_port_status(port_num))
t = 0.
dt = 0.1
for _ in range(25):
# read_hub_port_sig_n_ena reads the state of the input bit corresponding
# to the ENA_n signal connecting the HUB Controller and the IC managing
# the power on downstream ports. Signal ACTIVE means VBUS output is present.
print(f"T = {round(t, 2)}: ", b.read_hub_port_sig_n_ena("external",port_num))
sleep(dt)
t += dt
class HUB:
# get_port_status(...) is a beautified version of hub's method:
def get_port_status_raw(self, port_num):
return self.ctrl_transfer(
bmRequestType=0xA3,
bRequest=BRequest.GET_STATUS,
wValue=0x0,
wIndex=port_num,
wLength=0x4,
)
def ctrl_transfer(
self,
bmRequestType,
bRequest,
wValue,
wIndex,
wLength=None,
data=None,
data_or_wLength=None,
):
# Args verification omitted for clarity
# self.dev is the instance returned by the usb.core.find(...)
resp = self.dev.ctrl_transfer(
bmRequestType=bmRequestType,
bRequest=bRequest,
wValue=wValue,
wIndex=wIndex,
data_or_wLength=data_or_wLength,
)
# Prevent timeouts with stacked xfers -- quick 'n dirty fix
sleep(0.2)
return resp
输出：
# Before disabling the port:
{'PortStatus.PORT_CONNECTION': 1, 'PortStatus.PORT_ENABLE': 0, 'PortStatus.PORT_SUSPEND': 1, 'PortStatus.PORT_OVER_CURRENT': 0, 'PortStatus.PORT_RESET': 0, 'PortStatus.PORT_POWER': 1, 'PortStatus.PORT_LOW_SPEED': 1, 'PortStatus.PORT_HIGH_SPEED': 0, 'PortStatus.PORT_TEST': 0, 'PortStatus.PORT_INDICATOR': 0, 'PortChange.C_PORT_CONNECTION': 0, 'PortChange.C_PORT_ENABLE': 0, 'PortChange.C_PORT_SUSPEND': 0, 'PortChange.C_PORT_OVER_CURRENT': 0, 'PortChange.C_PORT_RESET': 0}
# Right after disabling the port:
{'PortStatus.PORT_CONNECTION': 0, 'PortStatus.PORT_ENABLE': 0, 'PortStatus.PORT_SUSPEND': 0, 'PortStatus.PORT_OVER_CURRENT': 0, 'PortStatus.PORT_RESET': 0, 'PortStatus.PORT_POWER': 0, 'PortStatus.PORT_LOW_SPEED': 0, 'PortStatus.PORT_HIGH_SPEED': 0, 'PortStatus.PORT_TEST': 0, 'PortStatus.PORT_INDICATOR': 0, 'PortChange.C_PORT_CONNECTION': 0, 'PortChange.C_PORT_ENABLE': 0, 'PortChange.C_PORT_SUSPEND': 0, 'PortChange.C_PORT_OVER_CURRENT': 0, 'PortChange.C_PORT_RESET': 0}
T = 0.0: GPIOExpState.INACTIVE
(...)
T = 1.2: GPIOExpState.INACTIVE
# Here something toggles behind my back the power back on, port becomes enabled and device discovered
T = 1.3: GPIOExpState.ACTIVE
(...)
好吧，我已经为此苦思冥想了两个小时，并试图不将其作为问题发布，但我放弃了。我今天迁移到了新的 Ubuntu 24.04 安装，但我无法使我的 FaveProgram.desktop 文件工作。这些文件定义 GUI 启动器图标以运行特定的 CLI 命令（例如“faveprogram -option attribute”），我搜索、尝试、搜索、破解和测试，然后 aaaarrrrgghh...
当我“运行”图标时，它总是打开默认的文本编辑器。以下是我尝试过的方法：
我查看了 /var/log/syslog，它提到了有关 VTE 生成问题的内容。这可能是一个转移注意力的话题，但我提到它是为了防止有人对下一步有什么提示。
我开始尝试研究 xdg-mime，但我并不理解它。
以下是我尝试运行的 .desktop 文件的内容：
#!/usr/bin/env xdg-open
[Desktop Entry]
Version=1.0
Type=Application
Terminal=true <-- normally false, tried true anyway
Exec=/usr/bin/program -option value <-- yes it exists, can run manually
Name=FaveProgram
Comment=FaveProgram
Icon=/valid/path/to/icon.png
编辑：在这里找到了“编辑”链接，之前看不到。添加一些内容：
如果系统日志中的 VTE 错误导致问题，那么当我尝试“作为程序运行”时会出现以下错误：