Linux 関連メモ

Gentoo で ffmpeg の SBR not implemented. をなんとかする (2009-12-08)

• HE-AAC なファイルをデコードしようとすると以下のようなメッセージが延々と流れる
  • [aac @ 0x82ba900]SBR not implemented. Update your FFmpeg version to the newest one from SVN. If the problem still occurs, it means that your file has a feature which has not been implemented.
• ffmpeg 内蔵の AAC デコーダが使われているため
• libfaad を使うようにすれば OK
  • 参考: [2586] 同梱ffmpegについて
• media-video/ffmpeg 0.5-r1 にて
  • /etc/make.conf に以下を追加

    EXTRA_FFMPEG_CONF="--disable-decoder=aac"

  • USE フラグに faad を追加
  • 再インストール

CardBus NIC の通信が途絶える件 (2008-08-21)

### 環境 * Ecolinux-light 8.04 (Ubuntu 8.04 ベース) * Linux mebius2 2.6.24-16-generic #1 SMP Thu Apr 10 13:23:42 UTC 2008 i686 GNU/Linux * SHARP Mebius PC-MJ700M * Ethernet controller: Allied Telesyn International RTL81xx Fast Ethernet (rev 10) * corega FEther II CB-TXD * CardBus bridge: Texas Instruments PCI1225 (rev 01)

現象

• dmesg から抜粋:

  [78549.339093] NETDEV WATCHDOG: eth2: transmit timed out
  [78552.337543] eth2: Transmit timeout, status 0d 0000 c07f media 00.
  [78552.337572] eth2: Tx queue start entry 69  dirty entry 65.
  [78552.337581] eth2:  Tx descriptor 0 is 000e004e.
  [78552.337590] eth2:  Tx descriptor 1 is 000e05ea. (queue head)
  [78552.337599] eth2:  Tx descriptor 2 is 000e05ea.
  [78552.337606] eth2:  Tx descriptor 3 is 000e0362.
  [78552.337640] eth2: link up, 100Mbps, full-duplex, lpa 0x45E1
  [78561.332724] NETDEV WATCHDOG: eth2: transmit timed out
  [78564.331169] eth2: Transmit timeout, status 0d 0000 c07f media 00.
  [78564.331197] eth2: Tx queue start entry 71  dirty entry 67.
  [78564.331206] eth2:  Tx descriptor 0 is 000e05ea.
  [78564.331214] eth2:  Tx descriptor 1 is 000e05ea.
  [78564.331222] eth2:  Tx descriptor 2 is 000e003c.
  [78564.331230] eth2:  Tx descriptor 3 is 000e05ea. (queue head)
  [78564.331265] eth2: link up, 100Mbps, full-duplex, lpa 0x45E1
  [78573.326352] NETDEV WATCHDOG: eth2: transmit timed out
  [78576.324800] eth2: Transmit timeout, status 0d 0000 c07f media 00.
  [78576.324827] eth2: Tx queue start entry 93  dirty entry 89.
  [78576.324837] eth2:  Tx descriptor 0 is 000e05ea.
  [78576.324846] eth2:  Tx descriptor 1 is 000e05ea. (queue head)
  [78576.324854] eth2:  Tx descriptor 2 is 000e05ea.
  [78576.324862] eth2:  Tx descriptor 3 is 000e05ea.
  [78576.324896] eth2: link up, 100Mbps, full-duplex, lpa 0x45E1
  [78585.319983] NETDEV WATCHDOG: eth2: transmit timed out
  [78588.318434] eth2: Transmit timeout, status 0d 0000 c07f media 00.
  [78588.318463] eth2: Tx queue start entry 89  dirty entry 85.
  [78588.318473] eth2:  Tx descriptor 0 is 000e0049.
  [78588.318481] eth2:  Tx descriptor 1 is 000e05ea. (queue head)
  [78588.318490] eth2:  Tx descriptor 2 is 000e05ea.
  [78588.318498] eth2:  Tx descriptor 3 is 000e05ea.
  [78588.318533] eth2: link up, 100Mbps, full-duplex, lpa 0x45E1

解決策

• Linux-Kernel Archive: [PATCH] pcmcia: Add disable_clkrun option
• /etc/modprobe.d/ti12xx-cardbus:

  options yenta_socket disable_clkrun=1

その他

• LXC