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commit 4197efeb3d9430b94521c587ed4a297be2ffc80f
parent 94a263826703c7926be71bf1104c01396c536a3a
Author: Francis Rowe <info@gluglug.org.uk>
Date:   Sat, 11 Jul 2015 23:10:56 +0100

docs/gnulinux/encrypted_trisquel.html: Troubleshooting

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docs/gnulinux/encrypted_trisquel.html | 98+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 98 insertions(+), 0 deletions(-)

diff --git a/docs/gnulinux/encrypted_trisquel.html b/docs/gnulinux/encrypted_trisquel.html @@ -323,6 +323,104 @@ <div class="section"> + <h1 id="troubleshooting">Troubleshooting</h1> + + <p> + A user reported issues when booting with a docking station attached + on an X200, when decrypting the disk in GRUB. The error + <i>AHCI transfer timed out</i> was observed. The workaround + was to remove the docking station. + </p> + + <p> + Further investigation revealed that it was the DVD drive causing problems. + Removing that worked around the issue. + </p> + +<pre> + +&quot;sudo wodim -prcap&quot; shows information about the drive: +Device was not specified. Trying to find an appropriate drive... +Detected CD-R drive: /dev/sr0 +Using /dev/cdrom of unknown capabilities +Device type : Removable CD-ROM +Version : 5 +Response Format: 2 +Capabilities : +Vendor_info : 'HL-DT-ST' +Identification : 'DVDRAM GU10N ' +Revision : 'MX05' +Device seems to be: Generic mmc2 DVD-R/DVD-RW. + +Drive capabilities, per MMC-3 page 2A: + + Does read CD-R media + Does write CD-R media + Does read CD-RW media + Does write CD-RW media + Does read DVD-ROM media + Does read DVD-R media + Does write DVD-R media + Does read DVD-RAM media + Does write DVD-RAM media + Does support test writing + + Does read Mode 2 Form 1 blocks + Does read Mode 2 Form 2 blocks + Does read digital audio blocks + Does restart non-streamed digital audio reads accurately + Does support Buffer-Underrun-Free recording + Does read multi-session CDs + Does read fixed-packet CD media using Method 2 + Does not read CD bar code + Does not read R-W subcode information + Does read raw P-W subcode data from lead in + Does return CD media catalog number + Does return CD ISRC information + Does support C2 error pointers + Does not deliver composite A/V data + + Does play audio CDs + Number of volume control levels: 256 + Does support individual volume control setting for each channel + Does support independent mute setting for each channel + Does not support digital output on port 1 + Does not support digital output on port 2 + + Loading mechanism type: tray + Does support ejection of CD via START/STOP command + Does not lock media on power up via prevent jumper + Does allow media to be locked in the drive via PREVENT/ALLOW command + Is not currently in a media-locked state + Does not support changing side of disk + Does not have load-empty-slot-in-changer feature + Does not support Individual Disk Present feature + + Maximum read speed: 4234 kB/s (CD 24x, DVD 3x) + Current read speed: 4234 kB/s (CD 24x, DVD 3x) + Maximum write speed: 4234 kB/s (CD 24x, DVD 3x) + Current write speed: 4234 kB/s (CD 24x, DVD 3x) + Rotational control selected: CLV/PCAV + Buffer size in KB: 1024 + Copy management revision supported: 1 + Number of supported write speeds: 4 + Write speed # 0: 4234 kB/s CLV/PCAV (CD 24x, DVD 3x) + Write speed # 1: 2822 kB/s CLV/PCAV (CD 16x, DVD 2x) + Write speed # 2: 1764 kB/s CLV/PCAV (CD 10x, DVD 1x) + Write speed # 3: 706 kB/s CLV/PCAV (CD 4x, DVD 0x) + +Supported CD-RW media types according to MMC-4 feature 0x37: + Does write multi speed CD-RW media + Does write high speed CD-RW media + Does write ultra high speed CD-RW media + Does not write ultra high speed+ CD-RW media + +</pre> + + </div> + + <div class="section"> + <p> Copyright &copy; 2014, 2015 Francis Rowe &lt;info@gluglug.org.uk&gt;<br/> Permission is granted to copy, distribute and/or modify this document