[BUG] Font display broken on 2.17 (QT)

[nelsonhef]

General description of bug:

• What happened: QT Font display is broken
• What should happen: Should display the name of the font for QT and GTK
• Fastfetch version used: 2.17
• Did it work in an older version: Yes, 2.16
• Where did you get the binary: PPA
• Does this issue still occur in the latest dev build? Yes

Often helpful information:

Screenshot:

Output of fastfetch -c ci.jsonc --format json:

[
  {
    "type": "Title",
    "result": {
      "userName": "nelson",
      "hostName": "nelson-lenovo",
      "homeDir": "/home/nelson/",
      "exePath": "/usr/bin/fastfetch",
      "userShell": "/bin/bash",
      "pageSize": 4096
    },
    "stat": 0
  },
  {
    "type": "Separator",
    "error": "Unsupported for JSON format",
    "stat": 0
  },
  {
    "type": "OS",
    "result": {
      "buildID": "",
      "codename": "virginia",
      "id": "linuxmint",
      "idLike": "ubuntu debian",
      "name": "Linux Mint",
      "prettyName": "Linux Mint 21.3",
      "variant": "",
      "variantID": "",
      "version": "21.3 (Virginia)",
      "versionID": "21.3"
    },
    "stat": 1
  },
  {
    "type": "Host",
    "result": {
      "family": "IDEAPAD",
      "name": "20149",
      "version": "Lenovo G480",
      "sku": "LENOVO_MT_20149",
      "vendor": "LENOVO",
      "serial": "",
      "uuid": ""
    },
    "stat": 0
  },
  {
    "type": "Bios",
    "result": {
      "date": "12/19/2012",
      "release": "0.149",
      "vendor": "LENOVO",
      "version": "5ECN95WW(V9.00)",
      "type": "UEFI"
    },
    "stat": 0
  },
  {
    "type": "Bootmgr",
    "result": {
      "name": "Ubuntu",
      "firmware": "\\EFI\\ubuntu\\grubx64.efi",
      "secureBoot": false
    },
    "stat": 0
  },
  {
    "type": "Board",
    "error": "board_name is not set.",
    "stat": 0
  },
  {
    "type": "Chassis",
    "result": {
      "type": "Notebook",
      "vendor": "LENOVO",
      "version": "Lenovo G480",
      "serial": ""
    },
    "stat": 0
  },
  {
    "type": "Kernel",
    "result": {
      "architecture": "x86_64",
      "name": "Linux",
      "release": "6.5.0-41-generic",
      "version": "#41~22.04.2-Ubuntu SMP PREEMPT_DYNAMIC Mon Jun  3 11:32:55 UTC 2",
      "displayVersion": ""
    },
    "stat": 0
  },
  {
    "type": "InitSystem",
    "result": {
      "name": "systemd",
      "exe": "/usr/lib/systemd/systemd",
      "version": "249.11-0ubuntu3.12",
      "pid": 1
    },
    "stat": 5
  },
  {
    "type": "Uptime",
    "result": {
      "uptime": 1350000,
      "bootTime": "2024-06-28T11:33:08.769-0300"
    },
    "stat": 0
  },
  {
    "type": "Loadavg",
    "result": [
      0.2646484375,
      0.49072265625,
      0.46875
    ],
    "stat": 0
  },
  {
    "type": "Processes",
    "result": 256,
    "stat": 0
  },
  {
    "type": "Packages",
    "result": {
      "all": 2641,
      "apk": 0,
      "brew": 0,
      "brewCask": 0,
      "choco": 0,
      "dpkg": 2608,
      "emerge": 0,
      "eopkg": 0,
      "flatpakSystem": 33,
      "flatpakUser": 0,
      "nixDefault": 0,
      "nixSystem": 0,
      "nixUser": 0,
      "pacman": 0,
      "paludis": 0,
      "pkg": 0,
      "pkgtool": 0,
      "macports": 0,
      "rpm": 0,
      "scoop": 0,
      "snap": 0,
      "winget": 0,
      "xbps": 0,
      "opkg": 0,
      "am": 0,
      "sorcery": 0,
      "guixSystem": 0,
      "guixUser": 0,
      "guixHome": 0,
      "pacmanBranch": ""
    },
    "stat": 2
  },
  {
    "type": "Shell",
    "result": {
      "exe": "bash",
      "exeName": "bash",
      "exePath": "/usr/bin/bash",
      "pid": 7073,
      "ppid": 7052,
      "processName": "bash",
      "prettyName": "bash",
      "version": "5.1.16",
      "tty": 0
    },
    "stat": 2
  },
  {
    "type": "Editor",
    "error": "$VISUAL or $EDITOR not set",
    "stat": 0
  },
  {
    "type": "Display",
    "result": [
      {
        "width": 1366,
        "height": 768,
        "id": 0,
        "name": "SEC454C",
        "primary": true,
        "refreshRate": 59.99489201398311,
        "rotation": 0,
        "scaledHeight": 768,
        "scaledWidth": 1366,
        "type": "Unknown"
      }
    ],
    "stat": 1
  },
  {
    "type": "Brightness",
    "result": [
      {
        "name": "SEC454C",
        "max": 976.0,
        "min": 0.0,
        "current": 688.0
      }
    ],
    "stat": 0
  },
  {
    "type": "Monitor",
    "result": [
      {
        "hdrCompatible": false,
        "name": "L192WS",
        "resolution": {
          "width": 1440,
          "height": 900
        },
        "physical": {
          "height": 256,
          "width": 410
        },
        "manufactureDate": {
          "year": 2007,
          "week": 32
        },
        "serial": 160174
      },
      {
        "hdrCompatible": false,
        "name": "SEC454C",
        "resolution": {
          "width": 1366,
          "height": 768
        },
        "physical": {
          "height": 174,
          "width": 309
        },
        "manufactureDate": {
          "year": 2011,
          "week": 0
        },
        "serial": null
      }
    ],
    "stat": 0
  },
  {
    "type": "LM",
    "result": {
      "service": "lightdm",
      "type": "X11",
      "version": "1.30.0"
    },
    "stat": 4
  },
  {
    "type": "DE",
    "result": {
      "processName": "cinnamon",
      "prettyName": "Cinnamon",
      "version": "6.0.4"
    },
    "stat": 0
  },
  {
    "type": "WM",
    "result": {
      "processName": "Mutter (Muffin)",
      "prettyName": "Muffin",
      "protocolName": "X11",
      "pluginName": ""
    },
    "stat": 0
  },
  {
    "type": "WMTheme",
    "result": "Mint-Y-Dark-Aqua (Mint-Y)",
    "stat": 3
  },
  {
    "type": "Theme",
    "result": {
      "theme1": "gtk2 [QT]",
      "theme2": "Mint-Y-Dark-Aqua [GTK2/3/4]"
    },
    "stat": 0
  },
  {
    "type": "Icons",
    "result": {
      "icons1": "Mint-Y [QT]",
      "icons2": "Papirus-Dark [GTK2/3/4]"
    },
    "stat": 0
  },
  {
    "type": "Font",
    "result": {
      "display": "@Variant(\\0\\0\\0@\\0\\0\\0\\f\\0R\\0o\\0\\x62\\0o\\0t\\0o@$\\0\\0\\0\\0\\0\\0\\xff\\xff\\xff\\xff\\x5\\x1\\0\\x19\\x10) [QT], Roboto (10pt, Light) [GTK2/3/4]",
      "fonts": [
        "@Variant(\\0\\0\\0@\\0\\0\\0\\f\\0R\\0o\\0\\x62\\0o\\0t\\0o@$\\0\\0\\0\\0\\0\\0\\xff\\xff\\xff\\xff\\x5\\x1\\0\\x19\\x10)",
        "Roboto (10pt, Light)",
        "Roboto (10pt, Light)",
        "Roboto (10pt, Light)"
      ]
    },
    "stat": 0
  },
  {
    "type": "Cursor",
    "result": {
      "theme": "Adwaita",
      "size": "24"
    },
    "stat": 0
  },
  {
    "type": "Wallpaper",
    "result": "/home/nelson/.local/share/pix/wallpaper29.jpeg",
    "stat": 0
  },
  {
    "type": "Terminal",
    "result": {
      "processName": "gnome-terminal-",
      "exe": "/usr/libexec/gnome-terminal-server",
      "exeName": "gnome-terminal-server",
      "exePath": "/usr/libexec/gnome-terminal-server",
      "pid": 7052,
      "ppid": 2177,
      "prettyName": "GNOME Terminal",
      "version": "3.44.0",
      "tty": ""
    },
    "stat": 80
  },
  {
    "type": "TerminalFont",
    "result": {
      "font": {
        "name": "Noto Mono",
        "size": "11",
        "styles": [],
        "pretty": "Noto Mono (11pt)"
      },
      "fallback": {
        "name": "",
        "size": "",
        "styles": [],
        "pretty": ""
      }
    },
    "stat": 0
  },
  {
    "type": "TerminalSize",
    "result": {
      "columns": 122,
      "rows": 32,
      "width": 1098,
      "height": 576
    },
    "stat": 21
  },
  {
    "type": "TerminalTheme",
    "result": {
      "fg": {
        "r": 170,
        "g": 170,
        "b": 170,
        "dark": false
      },
      "bg": {
        "r": 0,
        "g": 0,
        "b": 0,
        "dark": true
      }
    },
    "stat": 21
  },
  {
    "type": "CPU",
    "result": {
      "cpu": "Intel(R) Core(TM) i5-3360M",
      "vendor": "GenuineIntel",
      "cores": {
        "physical": 2,
        "logical": 4,
        "online": 4
      },
      "frequency": {
        "base": 2.579,
        "max": 3.5,
        "min": 1.2,
        "biosLimit": null
      },
      "coreTypes": [
        {
          "count": 4,
          "freq": 3500000
        }
      ],
      "temperature": 48.0
    },
    "stat": 2
  },
  {
    "type": "CPUCache",
    "result": {
      "l1": [
        {
          "size": 32768,
          "num": 2,
          "lineSize": 64,
          "type": "data"
        },
        {
          "size": 32768,
          "num": 2,
          "lineSize": 64,
          "type": "instruction"
        }
      ],
      "l2": [
        {
          "size": 262144,
          "num": 2,
          "lineSize": 64,
          "type": "unified"
        }
      ],
      "l3": [
        {
          "size": 3145728,
          "num": 1,
          "lineSize": 64,
          "type": "unified"
        }
      ]
    },
    "stat": 0
  },
  {
    "type": "CPUUsage",
    "result": [
      0.0,
      0.0,
      0.0,
      0.0
    ],
    "stat": 201
  },
  {
    "type": "GPU",
    "result": [
      {
        "coreCount": null,
        "memory": {
          "dedicated": {
            "total": null,
            "used": null
          },
          "shared": {
            "total": null,
            "used": null
          }
        },
        "driver": "i915",
        "name": "3rd Gen Core processor Graphics Controller",
        "temperature": null,
        "type": "Integrated",
        "vendor": "Intel",
        "platformApi": "DRM (card0)",
        "frequency": 1.2,
        "deviceId": 1432
      }
    ],
    "stat": 1
  },
  {
    "type": "Memory",
    "result": {
      "total": 8176242688,
      "used": 1996312576
    },
    "stat": 0
  },
  {
    "type": "PhysicalMemory",
    "error": "Failed to get SMBIOS data",
    "stat": 0
  },
  {
    "type": "Swap",
    "result": {
      "total": 2147479552,
      "used": 0
    },
    "stat": 0
  },
  {
    "type": "Disk",
    "result": [
      {
        "bytes": {
          "available": 49680056320,
          "free": 53696835584,
          "total": 78151184384,
          "used": 24454348800
        },
        "files": {
          "total": 4890624,
          "used": 703660
        },
        "filesystem": "ext4",
        "mountpoint": "/",
        "mountFrom": "/dev/sda5",
        "name": "",
        "volumeType": [
          "Regular"
        ],
        "createTime": "2023-09-20T11:45:25.000-0300"
      },
      {
        "bytes": {
          "available": 67790848,
          "free": 67790848,
          "total": 100663296,
          "used": 32872448
        },
        "files": {
          "total": null,
          "used": null
        },
        "filesystem": "vfat",
        "mountpoint": "/boot/efi",
        "mountFrom": "/dev/sda2",
        "name": "EFI system partition",
        "volumeType": [
          "Hidden"
        ],
        "createTime": null
      }
    ],
    "stat": 0
  },
  {
    "type": "Battery",
    "result": [
      {
        "capacity": 100.0,
        "manufacturer": "LENOVO",
        "manufactureDate": "",
        "modelName": "PABAS0241231",
        "status": "AC Connected",
        "technology": "Li-ion",
        "serial": "41167",
        "temperature": null,
        "cycleCount": 0
      }
    ],
    "stat": 29
  },
  {
    "type": "PowerAdapter",
    "result": [],
    "stat": 0
  },
  {
    "type": "Player",
    "error": "No media found",
    "stat": 3
  },
  {
    "type": "Media",
    "error": "No media found",
    "stat": 0
  },
  {
    "type": "PublicIp",
    "result": {
      "ip": "xxx.xxx.xxx.xx",
      "location": "xxx"
    },
    "stat": 0
  },
  {
    "type": "LocalIp",
    "result": [
      {
        "defaultRoute": true,
        "ipv4": "192.168.10.181/24",
        "ipv6": "",
        "mac": "d0:37:45:d8:98:38",
        "name": "wlxd03745d89838",
        "mtu": 1500
      }
    ],
    "stat": 1
  },
  {
    "type": "Wifi",
    "result": [
      {
        "inf": {
          "description": "wlxd03745d89838",
          "status": "Activated"
        },
        "conn": {
          "status": "Connected",
          "ssid": "Enterprise_5G",
          "bssid": "D6:92:5E:FA:0C:04",
          "protocol": "802.11ac (Wi-Fi 5)",
          "security": "WPA2",
          "signalQuality": 68.0,
          "rxRate": 58.0,
          "txRate": 802.0
        }
      }
    ],
    "stat": 18
  },
  {
    "type": "DateTime",
    "result": "2024-06-28T11:10:39.158-0300",
    "stat": 0
  },
  {
    "type": "Locale",
    "result": "pt_BR.UTF-8",
    "stat": 0
  },
  {
    "type": "Vulkan",
    "result": {
      "apiVersion": "1.2.255",
      "conformanceVersion": "",
      "driver": "Intel open-source Mesa driver [Mesa 23.2.1-1ubuntu3.1~22.04.2]",
      "gpus": [
        {
          "type": "Integrated",
          "vendor": "Intel",
          "name": "Intel(R) HD Graphics 4000 (IVB GT2)",
          "driver": "Mesa 23.2.1-1ubuntu3.1~22.04.2",
          "platformApi": "Vulkan 1.2.255",
          "deviceId": 358,
          "memory": {
            "dedicated": {
              "total": 0,
              "used": null
            },
            "shared": {
              "total": 1610612736,
              "used": null
            }
          },
          "deviceId": 358
        }
      ]
    },
    "stat": 32
  },
  {
    "type": "OpenGL",
    "result": {
      "version": "4.2 (Compatibility Profile) Mesa 23.2.1-1ubuntu3.1~22.04.2",
      "renderer": "Mesa Intel(R) HD Graphics 4000 (IVB GT2)",
      "vendor": "Intel",
      "slv": "4.20",
      "library": "EGL"
    },
    "stat": 36
  },
  {
    "type": "OpenCL",
    "error": "clGetPlatformIDs() failed",
    "stat": 0
  },
  {
    "type": "Users",
    "result": [
      {
        "name": "nelson",
        "hostName": ":0",
        "sessionName": "tty7",
        "clientIp": "0.0.0.0",
        "loginTime": "2024-06-28T11:03:16.075-0300"
      }
    ],
    "stat": 0
  },
  {
    "type": "Bluetooth",
    "error": "Failed to call GetManagedObjects",
    "stat": 36
  },
  {
    "type": "Sound",
    "result": [
      {
        "active": true,
        "main": true,
        "volume": 55,
        "name": "Áudio interno Estéreo analógico",
        "identifier": "alsa_output.pci-0000_00_1b.0.analog-stereo"
      }
    ],
    "stat": 2
  },
  {
    "type": "Camera",
    "result": [
      {
        "name": "Lenovo EasyCamera: Lenovo EasyC",
        "vendor": "",
        "colorSpace": "sRGB",
        "id": "usb-0000:00:1d.0-1.6",
        "width": 1280,
        "height": 720
      }
    ],
    "stat": 138
  },
  {
    "type": "Gamepad",
    "result": [],
    "stat": 0
  },
  {
    "type": "Weather",
    "result": "xxxxx",
    "stat": 0
  },
  {
    "type": "NetIO",
    "result": [
      {
        "name": "wlxd03745d89838",
        "defaultRoute": true,
        "txBytes": 1258,
        "rxBytes": 1597,
        "txPackets": 12,
        "rxPackets": 10,
        "rxErrors": 0,
        "txErrors": 0,
        "rxDrops": 0,
        "txDrops": 0
      }
    ],
    "stat": 361
  },
  {
    "type": "DiskIO",
    "result": [
      {
        "name": "PLDS DVD-RW DS8A8SH",
        "devPath": "/dev/sr0",
        "bytesRead": 0,
        "bytesWritten": 0,
        "readCount": 0,
        "writeCount": 0
      },
      {
        "name": "ATA P3-256",
        "devPath": "/dev/sda",
        "bytesRead": 0,
        "bytesWritten": 81920,
        "readCount": 0,
        "writeCount": 19
      }
    ],
    "stat": 1
  },
  {
    "type": "PhysicalDisk",
    "result": [
      {
        "name": "PLDS DVD-RW DS8A8SH",
        "devPath": "/dev/sr0",
        "interconnect": "ATA",
        "kind": "HDD",
        "size": 1073741312,
        "serial": "",
        "removable": true,
        "readOnly": false,
        "revision": "",
        "temperature": null
      },
      {
        "name": "ATA P3-256",
        "devPath": "/dev/sda",
        "interconnect": "ATA",
        "kind": "SSD",
        "size": 256060514304,
        "serial": "",
        "removable": false,
        "readOnly": false,
        "revision": "",
        "temperature": null
      }
    ],
    "stat": 0
  },
  {
    "type": "Version",
    "result": {
      "projectName": "fastfetch",
      "architecture": "x86_64",
      "version": "2.17.0",
      "versionTweak": "",
      "cmakeBuiltType": "RelWithDebInfo",
      "compileTime": "Jun 28 2024, 05:43:18",
      "compiler": "gcc 11.4.0",
      "debugMode": false,
      "libc": "glibc 2.35"
    },
    "stat": 0
  },
  {
    "type": "Break",
    "error": "Unsupported for JSON format",
    "stat": 0
  },
  {
    "type": "Colors",
    "error": "Unsupported for JSON format",
    "stat": 0
  }

[CarterLi]

Should be a regression introduced in #1047

@capezotte Do you have any idea?

[CarterLi]

Do you use qt[56]ct? What did it use to display? Please paste the content of ~/.config/qt5ct/qt5ct.conf and ~/.config/qt6ct/qt6ct.conf

[nelsonhef]

Yes, i have qt5ct installed.

~/.config/qt5ct/qt5ct.conf

[Appearance]
color_scheme_path=/usr/share/qt5ct/colors/airy.conf
custom_palette=false
icon_theme=Mint-Y
standard_dialogs=default
style=gtk2

[Fonts]
fixed=@Variant(\0\0\0@\0\0\0\x12\0N\0o\0t\0o\0 \0M\0o\0n\0o@&\0\0\0\0\0\0\xff\xff\xff\xff\x5\x1\0\x32\x10)
general=@Variant(\0\0\0@\0\0\0\f\0R\0o\0\x62\0o\0t\0o@$\0\0\0\0\0\0\xff\xff\xff\xff\x5\x1\0\x19\x10)

[Interface]
activate_item_on_single_click=1
buttonbox_layout=0
cursor_flash_time=1000
dialog_buttons_have_icons=1
double_click_interval=400
gui_effects=@Invalid()
keyboard_scheme=2
menus_have_icons=true
show_shortcuts_in_context_menus=true
stylesheets=@Invalid()
toolbutton_style=4
underline_shortcut=1
wheel_scroll_lines=3

[SettingsWindow]
geometry=@ByteArray(\x1\xd9\xd0\xcb\0\x3\0\0\0\0\0\x1e\0\0\0\x1e\0\0\x2\xfc\0\0\x2~\0\0\0\x1e\0\0\0>\0\0\x2\xfc\0\0\x2~\0\0\0\0\0\0\0\0\x5V\0\0\0\x1e\0\0\0>\0\0\x2\xfc\0\0\x2~)

[Troubleshooting]
force_raster_widgets=1
ignored_applications=@Invalid()

[CarterLi]

fixed=@variant(\0\0\0@\0\0\0\x12\0N\0o\0t\0o\0 \0M\0o\0n\0o@&\0\0\0\0\0\0\xff\xff\xff\xff\x5\x1\0\x32\x10)

Do you have any idea what this is?

[capezotte]

Do you have any idea?

I think the user's distribution is shipping an older version that triggers the FIXME part of the PR. I've never found any clear documentation for the @Variant(...) encoding for fonts. From some experimentation I did before my distribution updated to a version with the simpler output format, I think the font name is between the pair of @s and the last few bytes are the font size in big endian.

I can try making a PR that tries to wrangle this format (or just clears the font output if it's found).

info: I'm running qt5ct 1.8 and qt6ct 0.9.

[CarterLi]

I can try making a PR that tries to wrangle this format (or just clears the font output if it's found).

I think if we get @Variant(...), just set the font as qtxct

[CarterLi]

@nelsonhef What did it use to print?

[capezotte]

I think if we get @variant(...), just set the font as qtxct

So the output would be qtXct [Qt], Roboto (10pt) [GTK 2/3]?

[CarterLi]

Seems strange.

[nelsonhef]

@nelsonhef What did it use to print?

Screenshot of 2.16

@capezotte hit the nail, it's the old (1.5) version of qt5ct shipped with Mint 21 (Ubuntu 22.04) that uses a text encoding instead of plain text.

[CarterLi]

They serialized QVariant of some struct as byte string, hence the output. If we can find the source code of qt5ct 1.5, we can definitely deserialize it.

[capezotte]

This seems to be relevant: https://invent.kde.org/qt/qt/qtbase/-/blob/dev/src/gui/text/qfont.cpp?ref_type=heads#L2761