debian

Debian dmesg日志中的警告信息有哪些

小樊
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2025-09-21 05:06:49
栏目: 智能运维

在Debian系统中,dmesg命令用于显示内核环缓冲区的消息。这些消息包括硬件状态、驱动程序加载和卸载、系统启动过程中的信息以及运行时的警告和错误。以下是一些常见的dmesg警告信息类型:

硬件相关警告

  1. PCI设备问题

    [    0.000000] pci 0000:00:1f.2: BAR 6: assigned [mem 0x90000000-0x9fffffff pref]
    [    0.000000] pci 0000:00:1f.2: BAR 6: failed to remap [mem 0x90000000-0x9fffffff pref]
    
  2. 硬盘驱动问题

    [    1.234567] ata1.00: exception Emask 0x0 SAct 0x10 SErr 0x0 action 0xe frozen
    [    1.234568] ata1.00: irq_stat 0x40000008
    
  3. 内存错误

    [    2.345678] EDAC sbridge MC0: HANDLING MCE MEMORY ERROR
    [    2.345679] EDAC sbridge MC0: CPU 0: Machine Check: 0 Bank 7: e00000000001009e
    

驱动程序相关警告

  1. 模块加载失败

    [    3.456789] usbcore: registered new interface driver usbfs
    [    3.456790] usbcore: registered new interface driver hub
    [    3.456791] usbcore: registered new device driver usb
    [    3.456792] usbcore: registered new interface driver usb-storage
    [    3.456793] scsi host0: usb-storage 2-1.1
    [    3.456794] scsi 0:0:0:0: Direct-Access     ATA      WDC WD10EZEX-00ZCT0 0501 PQ: 0 ANSI: 2
    [    3.456795] sd 0:0:0:0: Attached scsi generic sg0 type 0
    [    3.456796] sd 0:0:0:0: [sda] Attached SCSI removable disk
    
  2. 驱动程序冲突

    [    4.567890] i8042: PNP: No PS/2 controller found.
    [    4.567891] i8042: Probing ports directly.
    

系统启动相关警告

  1. 启动失败

    [    5.678901] [drm:intel_load_state [i915]] *ERROR* Failed to load saved state for i915
    
  2. 硬件初始化失败

    [    6.789012] i2c-i801 0000:00:1f.3: could not find device @ 0x1e
    

运行时警告

  1. 资源不足

    [    7.890123] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
    [    7.890124] r8169 0000:02:00.0 eth0: link up
    
  2. 系统调用错误

    [    8.901234] kernel: [  890.123456] audit: type=1400 audit(1633072800.123:47): apparmor="DENIED" operation="open" profile="snap.core18.hostapparmor" name="/etc/passwd" pid=1234 comm="core18"
    

其他常见警告

  1. 内核模块警告

    [    9.012345] [drm:intel_crtc_enable [i915]] *ERROR* Failed to set mode on pipe A
    
  2. 网络相关警告

    [   10.123456] r8169 0000:02:00.0 eth0: link down
    [   10.123457] r8169 0000:02:00.0 eth0: link up
    

要查看dmesg日志中的警告信息,可以使用以下命令:

dmesg | grep -i 'warning\|error'

或者使用journalctl命令查看系统日志中的警告和错误信息:

journalctl -p 1 -xb

这些命令可以帮助你快速定位和解决系统中的问题。

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