Linux 関連メモ †

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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

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CardBus NIC の通信が途絶える件 (2008-08-21) †

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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)

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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

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解決策 †

Linux-Kernel Archive: [PATCH] pcmcia: Add disable_clkrun option
/etc/modprobe.d/ti12xx-cardbus:
```
options yenta_socket disable_clkrun=1
```