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修改Ubuntu22.04系统图标以及硬件描述

工作笔记
有 N 人看过

最近一段时间在搞RK3588适配Ubuntu22.04的问题，发现适配之后的系统，在设置界面中的Processor识别不到，另外我也看到过有其他的人修改了上面的Ubuntu的图标，定制成了自己的图片，虽然这些都是不影响功能使用的无关痛痒的问题，但是还是很好奇这个应该是如何修改的。

Screenshot from 2024-11-23 14-15-22

先说说更换Ubuntu22.04系统图标的问题，这个在网上就可以很容易搜到了，链接如下：https://blog.csdn.net/sinat_35773915/article/details/138065266

其实说白了直接替换系统中的文件就可以了：

修改启动界面的logo：

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sudo cp 新logo.png /usr/share/plymouth/themes/spinner/watermark.png

修改登陆界面的logo：

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sudo cp 新logo.png /usr/share/plymouth/ubuntu-logo.png

修改系统-设置-关于里面的logo

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sudo cp 新logo.png /usr/share/pixmaps/ubuntu-logo-icon.png

其实比较麻烦的是修改Processor字段，首先我们需要知道，这个Processor是从那里得到的。经过一番查询，后来找到这个是从/proc/cpuinfo中的model name看到的。

可以看到我们下面是没有这个model name的，所以它这里是显示不出来Processor的。

image-20241123151528978

那么我们应该如何在这里增加一个呢？

直到我看到了Github上的这个提交：https://github.com/Joshua-Riek/linux-rockchip/commit/453cd99e5aa06d6402abae2d6d18ef0ac4194370

可以看到这个作者是修改在cpuinfo信息中增加一个cpu model的信息，该信息是从设备树中的/system路径下获取的cpu,model描述里面的信息，那我们直接也仿照着修改一下就好啦！

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diff --git a/arch/arm64/boot/dts/rockchip/OK3588-C-linux.dts b/arch/arm64/boot/dts/rockchip/OK3588-C-linux.dts
index 8ea1203422ac..ff69b0771ae4 100644
--- a/arch/arm64/boot/dts/rockchip/OK3588-C-linux.dts
+++ b/arch/arm64/boot/dts/rockchip/OK3588-C-linux.dts
@@ -2,6 +2,7 @@
 #include "OK3588-C-common.dtsi"
 / {
        model = "Forlinx OK3588 Board";
+       processor = "FET3588-C (Designed by forlinx in BaoDing)";
        compatible = "forlinx,ok3588", "rockchip,rk3588";

        chosen: chosen {
diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c
index e2b1bceebbee..8ae432a30f25 100644
--- a/arch/arm64/kernel/cpuinfo.c
+++ b/arch/arm64/kernel/cpuinfo.c
@@ -24,6 +24,7 @@
 #include <linux/sched.h>
 #include <linux/smp.h>
 #include <linux/delay.h>
+#include <linux/of_platform.h>

 unsigned int system_serial_low;
 EXPORT_SYMBOL(system_serial_low);
@@ -145,6 +146,9 @@ static const char *const compat_hwcap2_str[] = {
 static int c_show(struct seq_file *m, void *v)
 {
        int i, j;
+       struct device_node *np;
+       const char *cpu_model;
+
        bool compat = personality(current->personality) == PER_LINUX32 ||
                      is_compat_task();

@@ -199,6 +203,12 @@ static int c_show(struct seq_file *m, void *v)
                }
                seq_puts(m, "\n");

+               np = of_find_node_by_path("/");
+               if (np) {
+                       if (!of_property_read_string(np, "processor", &cpu_model))
+                               seq_printf(m, "model name\t: %s\n", cpu_model);
+                       of_node_put(np);
+               }
                seq_printf(m, "CPU implementer\t: 0x%02x\n",
                           MIDR_IMPLEMENTOR(midr));
                seq_printf(m, "CPU architecture: 8\n");

接着编译内核更新之后看一下我们的效果吧！

Screenshot from 2024-11-23 15-10-35

image-20241123152249557

其实还有就是关于界面中的Disk Capacity显示为Unknown的问题，这个最终定位到和udisksctl status命令输出的结果有关系，不知道为什么系统中的结果为空。这个就放到后面再去排查吧。

image-20241123153229378

补充：后面有时间的时候排查了一下Disk Capacity显示为Unknown的问题，采取的方法是按照文件系统的构建方法重新构建了一遍，来定位到底是哪一步操作引入了这个问题。后面终于发现是因为之前在修改U盘自动挂载的时候，覆盖了系统的自动挂载的规则，涉及到的文件如下：/usr/lib/udev/rules.d/60-persistent-storage.rules

在这个里面，Ubuntu系统会对挂载的设备进行管理，但是如果删除了这个文件或者是修改的有问题，就会造成Ubuntu无法管理外设的储存。所以修改之后解决了这个问题

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# do not edit this file, it will be overwritten on update

# persistent storage links: /dev/disk/{by-id,by-uuid,by-label,by-path}
# scheme based on "Linux persistent device names", 2004, Hannes Reinecke <hare@suse.de>

ACTION=="remove", GOTO="persistent_storage_end"
ENV{UDEV_DISABLE_PERSISTENT_STORAGE_RULES_FLAG}=="1", GOTO="persistent_storage_end"

SUBSYSTEM!="block|ubi", GOTO="persistent_storage_end"
KERNEL!="loop*|mmcblk*[0-9]|msblk*[0-9]|mspblk*[0-9]|nvme*|sd*|sr*|vd*|xvd*|bcache*|cciss*|dasd*|ubd*|ubi*|scm*|pmem*|nbd*|zd*", GOTO="persistent_storage_end"

# ignore partitions that span the entire disk
TEST=="whole_disk", GOTO="persistent_storage_end"

# For partitions import parent disk ID_* information, except ID_FS_*.
#
# This is particularly important on media where a filesystem superblock and
# partition table are found on the same level, e.g. common Linux distro ISO
# installation media.
#
# In the case where a partition device points to the same filesystem that
# was detected on the parent disk, the ID_FS_* information is already
# present on the partition devices as well as the parent, so no need to
# propagate it. In the case where the partition device points to a different
# filesystem, merging the parent ID_FS_ properties would lead to
# inconsistencies, so we avoid doing so.
ENV{DEVTYPE}=="partition", \
  IMPORT{parent}="ID_[!F]*", IMPORT{parent}="ID_", \
  IMPORT{parent}="ID_F[!S]*", IMPORT{parent}="ID_F", \
  IMPORT{parent}="ID_FS[!_]*", IMPORT{parent}="ID_FS"

# NVMe
KERNEL=="nvme*[0-9]n*[0-9]", ATTR{wwid}=="?*", SYMLINK+="disk/by-id/nvme-$attr{wwid}"
KERNEL=="nvme*[0-9]n*[0-9]p*[0-9]", ENV{DEVTYPE}=="partition", ATTRS{wwid}=="?*", SYMLINK+="disk/by-id/nvme-$attr{wwid}-part%n"

KERNEL=="nvme*[0-9]n*[0-9]", ENV{DEVTYPE}=="disk", ATTRS{serial}=="?*", ENV{ID_SERIAL_SHORT}="$attr{serial}"
KERNEL=="nvme*[0-9]n*[0-9]", ENV{DEVTYPE}=="disk", ATTRS{wwid}=="?*", ENV{ID_WWN}="$attr{wwid}"
KERNEL=="nvme*[0-9]n*[0-9]", ENV{DEVTYPE}=="disk", ATTRS{model}=="?*", ENV{ID_MODEL}="$attr{model}"
KERNEL=="nvme*[0-9]n*[0-9]", ENV{DEVTYPE}=="disk", ATTRS{firmware_rev}=="?*", ENV{ID_REVISION}="$attr{firmware_rev}"
KERNEL=="nvme*[0-9]n*[0-9]", ENV{DEVTYPE}=="disk", ATTRS{nsid}=="?*", ENV{ID_NSID}="$attr{nsid}"
# obsolete symlink that might get overridden on adding a new nvme controller, kept for backward compatibility
KERNEL=="nvme*[0-9]n*[0-9]", ENV{DEVTYPE}=="disk", ENV{ID_MODEL}=="?*", ENV{ID_SERIAL_SHORT}=="?*", \
  OPTIONS="string_escape=replace", ENV{ID_SERIAL}="$env{ID_MODEL}_$env{ID_SERIAL_SHORT}", SYMLINK+="disk/by-id/nvme-$env{ID_SERIAL}"
KERNEL=="nvme*[0-9]n*[0-9]", ENV{DEVTYPE}=="disk", ENV{ID_MODEL}=="?*", ENV{ID_SERIAL_SHORT}=="?*", ENV{ID_NSID}=="?*",\
  OPTIONS="string_escape=replace", ENV{ID_SERIAL}="$env{ID_MODEL}_$env{ID_SERIAL_SHORT}_$env{ID_NSID}", SYMLINK+="disk/by-id/nvme-$env{ID_SERIAL}"

KERNEL=="nvme*[0-9]n*[0-9]p*[0-9]", ENV{DEVTYPE}=="partition", ATTRS{serial}=="?*", ENV{ID_SERIAL_SHORT}="$attr{serial}"
KERNEL=="nvme*[0-9]n*[0-9]p*[0-9]", ENV{DEVTYPE}=="partition", ATTRS{model}=="?*", ENV{ID_MODEL}="$attr{model}"
KERNEL=="nvme*[0-9]n*[0-9]p*[0-9]", ENV{DEVTYPE}=="partition", ATTRS{firmware_rev}=="?*", ENV{ID_REVISION}="$attr{firmware_rev}"
KERNEL=="nvme*[0-9]n*[0-9]p*[0-9]", ENV{DEVTYPE}=="partition", ATTRS{nsid}=="?*", ENV{ID_NSID}="$attr{nsid}"
# obsolete symlink that might get overridden on adding a new nvme controller, kept for backward compatibility
KERNEL=="nvme*[0-9]n*[0-9]p*[0-9]", ENV{DEVTYPE}=="partition", ENV{ID_MODEL}=="?*", ENV{ID_SERIAL_SHORT}=="?*", \
  OPTIONS="string_escape=replace", ENV{ID_SERIAL}="$env{ID_MODEL}_$env{ID_SERIAL_SHORT}", SYMLINK+="disk/by-id/nvme-$env{ID_SERIAL}-part%n"
KERNEL=="nvme*[0-9]n*[0-9]p*[0-9]", ENV{DEVTYPE}=="partition", ENV{ID_MODEL}=="?*", ENV{ID_SERIAL_SHORT}=="?*",  ENV{ID_NSID}=="?*",\
  OPTIONS="string_escape=replace", ENV{ID_SERIAL}="$env{ID_MODEL}_$env{ID_SERIAL_SHORT}_$env{ID_NSID}", SYMLINK+="disk/by-id/nvme-$env{ID_SERIAL}-part%n"

# virtio-blk
KERNEL=="vd*[!0-9]", ATTRS{serial}=="?*", ENV{ID_SERIAL}="$attr{serial}", SYMLINK+="disk/by-id/virtio-$env{ID_SERIAL}"
KERNEL=="vd*[0-9]", ATTRS{serial}=="?*", ENV{ID_SERIAL}="$attr{serial}", SYMLINK+="disk/by-id/virtio-$env{ID_SERIAL}-part%n"

# ATA
KERNEL=="sd*[!0-9]|sr*", ENV{ID_SERIAL}!="?*", SUBSYSTEMS=="scsi", ATTRS{vendor}=="ATA", IMPORT{program}="ata_id --export $devnode"

# ATAPI devices (SPC-3 or later)
KERNEL=="sd*[!0-9]|sr*", ENV{ID_SERIAL}!="?*", SUBSYSTEMS=="scsi", ATTRS{type}=="5", ATTRS{scsi_level}=="[6-9]*", IMPORT{program}="ata_id --export $devnode"

# Run ata_id on non-removable USB Mass Storage (SATA/PATA disks in enclosures)
KERNEL=="sd*[!0-9]|sr*", ENV{ID_SERIAL}!="?*", ATTR{removable}=="0", SUBSYSTEMS=="usb", IMPORT{program}="ata_id --export $devnode"

# Fall back usb_id for USB devices
KERNEL=="sd*[!0-9]|sr*", ENV{ID_SERIAL}!="?*", SUBSYSTEMS=="usb", IMPORT{builtin}="usb_id"

# SCSI devices
KERNEL=="sd*[!0-9]|sr*", ENV{ID_SERIAL}!="?*", IMPORT{program}="scsi_id --export --whitelisted -d $devnode", ENV{ID_BUS}="scsi"
KERNEL=="cciss*", ENV{DEVTYPE}=="disk", ENV{ID_SERIAL}!="?*", IMPORT{program}="scsi_id --export --whitelisted -d $devnode", ENV{ID_BUS}="cciss"
KERNEL=="sd*|sr*|cciss*", ENV{DEVTYPE}=="disk", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/$env{ID_BUS}-$env{ID_SERIAL}"
KERNEL=="sd*|cciss*", ENV{DEVTYPE}=="partition", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/$env{ID_BUS}-$env{ID_SERIAL}-part%n"

# PMEM devices
KERNEL=="pmem*", ENV{DEVTYPE}=="disk", ATTRS{uuid}=="?*", SYMLINK+="disk/by-id/pmem-$attr{uuid}"

# FireWire
KERNEL=="sd*[!0-9]|sr*", ATTRS{ieee1394_id}=="?*", SYMLINK+="disk/by-id/ieee1394-$attr{ieee1394_id}"
KERNEL=="sd*[0-9]", ATTRS{ieee1394_id}=="?*", SYMLINK+="disk/by-id/ieee1394-$attr{ieee1394_id}-part%n"

# MMC
KERNEL=="mmcblk[0-9]", SUBSYSTEMS=="mmc", ATTRS{serial}=="?*", ENV{ID_SERIAL}="$attr{serial}"
KERNEL=="mmcblk[0-9]", SUBSYSTEMS=="mmc", ATTRS{name}=="?*", ENV{ID_NAME}="$attr{name}"
KERNEL=="mmcblk[0-9]", ENV{ID_NAME}=="?*", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/mmc-$env{ID_NAME}_$env{ID_SERIAL}"
KERNEL=="mmcblk[0-9]p[0-9]*", ENV{ID_NAME}=="?*", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/mmc-$env{ID_NAME}_$env{ID_SERIAL}-part%n"

# Memstick
KERNEL=="msblk[0-9]|mspblk[0-9]", SUBSYSTEMS=="memstick", ATTRS{name}=="?*", ATTRS{serial}=="?*", \
  ENV{ID_NAME}="$attr{name}", ENV{ID_SERIAL}="$attr{serial}", SYMLINK+="disk/by-id/memstick-$env{ID_NAME}_$env{ID_SERIAL}"
KERNEL=="msblk[0-9]p[0-9]|mspblk[0-9]p[0-9]", ENV{ID_NAME}=="?*", ENV{ID_SERIAL}=="?*", SYMLINK+="disk/by-id/memstick-$env{ID_NAME}_$env{ID_SERIAL}-part%n"

# by-path
ENV{DEVTYPE}=="disk", DEVPATH!="*/virtual/*", IMPORT{builtin}="path_id"
KERNEL=="mmcblk[0-9]boot[0-9]", ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}-boot%n"
KERNEL!="mmcblk[0-9]boot[0-9]", ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}"
ENV{DEVTYPE}=="partition", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}-part%n"
# compatible links for ATA devices
KERNEL!="mmcblk[0-9]boot[0-9]", ENV{DEVTYPE}=="disk", ENV{ID_PATH_ATA_COMPAT}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH_ATA_COMPAT}"
ENV{DEVTYPE}=="partition", ENV{ID_PATH_ATA_COMPAT}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH_ATA_COMPAT}-part%n"

# legacy virtio-pci by-path links (deprecated)
KERNEL=="vd*[!0-9]", ENV{ID_PATH}=="pci-*", SYMLINK+="disk/by-path/virtio-$env{ID_PATH}"
KERNEL=="vd*[0-9]", ENV{ID_PATH}=="pci-*", SYMLINK+="disk/by-path/virtio-$env{ID_PATH}-part%n"

# probe filesystem metadata of optical drives which have a media inserted
KERNEL=="sr*", ENV{DISK_EJECT_REQUEST}!="?*", ENV{ID_CDROM_MEDIA_TRACK_COUNT_DATA}=="?*", ENV{ID_CDROM_MEDIA_SESSION_LAST_OFFSET}=="?*", \
  IMPORT{builtin}="blkid --hint=session_offset=$env{ID_CDROM_MEDIA_SESSION_LAST_OFFSET}"
# single-session CDs do not have ID_CDROM_MEDIA_SESSION_LAST_OFFSET
KERNEL=="sr*", ENV{DISK_EJECT_REQUEST}!="?*", ENV{ID_CDROM_MEDIA_TRACK_COUNT_DATA}=="?*", ENV{ID_CDROM_MEDIA_SESSION_LAST_OFFSET}=="", \
  IMPORT{builtin}="blkid --noraid"

# probe filesystem metadata of disks
KERNEL!="sr*|mmcblk[0-9]boot[0-9]", IMPORT{builtin}="blkid"

# by-label/by-uuid links (filesystem metadata)
# Skip bcache backing devices, handled in 69-bcache.rules
ENV{ID_FS_TYPE}=="bcache", GOTO="skip_bcache_fs_type"
ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_UUID_ENC}=="?*", SYMLINK+="disk/by-uuid/$env{ID_FS_UUID_ENC}"
ENV{ID_FS_USAGE}=="filesystem|other|crypto", ENV{ID_FS_LABEL_ENC}=="?*", SYMLINK+="disk/by-label/$env{ID_FS_LABEL_ENC}"
LABEL="skip_bcache_fs_type"

# by-id (World Wide Name)
ENV{DEVTYPE}=="disk", ENV{ID_WWN_WITH_EXTENSION}=="?*", SYMLINK+="disk/by-id/wwn-$env{ID_WWN_WITH_EXTENSION}"
ENV{DEVTYPE}=="partition", ENV{ID_WWN_WITH_EXTENSION}=="?*", SYMLINK+="disk/by-id/wwn-$env{ID_WWN_WITH_EXTENSION}-part%n"

# by-partlabel/by-partuuid links (partition metadata)
ENV{ID_PART_ENTRY_UUID}=="?*", SYMLINK+="disk/by-partuuid/$env{ID_PART_ENTRY_UUID}"
ENV{ID_PART_ENTRY_SCHEME}=="gpt", ENV{ID_PART_ENTRY_NAME}=="?*", SYMLINK+="disk/by-partlabel/$env{ID_PART_ENTRY_NAME}"

# 增加的内容
SUBSYSTEM!="block",GOTO="udisk_hotplug_end"
IMPORT{program}="/sbin/blkid -o udev -p %N"
ENV{ID_FS_TYPE}=="", GOTO="udisk_hotplug_end"
ENV{ID_FS_LABEL}!="", ENV{label_uuid_name}="%E{ID_FS_LABEL}"
ENV{ID_FS_LABEL}=="", ENV{label_uuid_name}="%E{ID_FS_UUID}"

ACTION=="add",KERNEL=="sd*[0-9]|mmcblk[1-9]p*", RUN+="/etc/udev/scripts/mount.sh %k %E{label_uuid_name}"
ACTION=="remove",KERNEL=="sd*[0-9]|mmcblk[1-9]p*", RUN+="/etc/udev/scripts/mount.sh %k %E{label_uuid_name}"
# 增加的内容结束

LABEL="persistent_storage_end"

这样修改之后，不仅修复了Disk Capacity显示为Unknown的问题，而且还修复了挂载的路径无法使用普通用户访问的问题。

image-20241230085526261