Archives: December 1999

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stdClass Object
(
    [itemid] => 19
    [title] => Linux/T23 - Dual Monitors
    [body] => 	Trying to get dual monitors working..


 
    [author] => erin
    [authorname] => Erin Schnabel
    [itime] => 2004-01-20 18:08:00
    [more] => 	References:

	
	IBM P70 Monitor Example
		Running GNU/Linux on the IBM ThinkPad T40p
		Sample .xsession
		[ltp] Dual/MultiHead setup
		[ltp] T40p+multihead
	

	Update – 2004-01-22

	Well crap. All that research, and the Savage driver for the T23 just plain won’t do dual display. 

	I’ll have to wait for my upgrade.. 


 
    [authorid] => 1
    [authormail] => erinschnabel@gmail.com
    [authorurl] => http://ebullientworks.com/
    [category] => General
    [catid] => 1
    [closed] => 0
)

Tuesday, 20 January 2004

IBM T23 Gentoo Kernel Config

Just for reference:

config-2.4.20-gentoo-r7
config-2.4.20-gentoo-r8

» Read More

posted by erin at 10:38 AM in General

(3 Comments)

tags: gentoo / thinkpad / T23

stdClass Object ( [itemid] => 14 [title] => Fixing Sound/Suspend-Resume on IBM T23 for Gentoo [body] =>

ALSA does work, as I mentioned here, but it seems to have problems across a suspend-resume, i.e. it doesn’t work post-resume.

Previously used patches don’t seem to apply to newer Alsa modules.

[author] => erin [authorname] => Erin Schnabel [itime] => 2003-12-19 16:01:00 [more] =>

Gentoo installs apmd_proxy in /etc/apm, with suspend.d and resume.d directories for handling special suspend/resume operations. Even better, event.d handles both..

So, based on some searching around, I ended up adding apmd to the list of services to start (rc-update add apmd default), and added the following script to get alsa to behave on resume:

bq. /etc/apm/event.d/alsa:

#!/bin/sh
<br />
case "$1" in
resume)
    /usr/sbin/alsactl power off
    /usr/sbin/alsactl power on
    ;;
suspend|standby)
    ;;
esac

Found this lovely snippet that answers why apm -s works better than Fn-F4 [emphasis added]:

The APM BIOS rejects suspend (or hibernate) requests under certain conditions: e.g., on my TP600, when my Xircom Ethernet/modem card is inserted and the machine is on AC power. If I do “apm -suspend” then the kernel apm driver hears about the request first and tells apmd which runs apmd_proxy which runs the scripts in /etc/apm/event.d which do things like eject the PCMCIA cards; only then does the apm driver pass the request on to the BIOS. (I think.) If I do “tpctl—suspend” on the other hand, the BIOS hears about the request first and, if the PCMCIA card is still inserted, it rejects the request with a couple of beeps (high—low). “apm—suspend” is therefore to be preferred to “tpctl—suspend”. Unfortunately there is no alternative to “tpctl—hibernate” : the apm program and the kernel apm driver don’t know how to ask for hibernation. Solution: write a little script that does “cardctl eject ; tpctl—hib”. Fn-F4 does the same as “tpctl—suspend” and Fn-F12 does the same as “tpctl—hibernate”.

The mention of the BIOS rejecting the suspend request when a PCMCIA card is inserted is exactly what I was seeing – I’m using my wireless card right now.

So after all that, I learned that I should suspend using apm -s and not with the thinkpad buttons if I have a pcmcia card active. With no PCMCIA card, the suspend request will be handled correctly by APM and apmd, and everything should be happy.

References:

Why doesn’t my Thinkpad hibernate? | Linux-ThinkPad FAQ

Various records of Linux Installation attempts:

Older Alsa drivers:

Information for Linux on IBM Laptops

APM / Other tools

Everywhere I looked, things would reference debian’s /etc/apm/event.d/alsa script. Thing is, I don’t run debian, and I’ll be damned if I could find the contents of the script anywhere…

For future reference, I’ve attached the source here.

[authorid] => 1 [authormail] => erinschnabel@gmail.com [authorurl] => http://ebullientworks.com/ [category] => General [catid] => 1 [closed] => 0 )

Friday, 19 December 2003

Fixing Sound/Suspend-Resume on IBM T23 for Gentoo

ALSA does work, as I mentioned here, but it seems to have problems across a suspend-resume, i.e. it doesn’t work post-resume.

Previously used patches don’t seem to apply to newer Alsa modules.

» Read More

posted by erin at 04:01 PM in General

(3 Comments)

tags: gentoo / thinkpad / T23 / alsa

stdClass Object
(
    [itemid] => 13
    [title] => CDRW on IBM T23 with Gentoo
    [body] => 	Didn’t notice until now that my CD-RW/DVD player wasn’t loading properly – you can tell how much I use it, eh? 

	I’d already built the kernel with the correct SCSI modules (see references, below).

I’d also already added “hdc=ide-scsi” to my grub boot parameters.



 
    [author] => erin
    [authorname] => Erin Schnabel
    [itime] => 2003-12-19 11:36:00
    [more] => 	What was left was the following:

	/etc/devfsd.conf:

	
	uncommented:
   # Give the cdrw group write permissions to /dev/sg0
   # This is done to have non root user use the burner (scan the scsi bus)
   REGISTER        ^scsi/host.*/bus.*/target.*/lun.*/generic    PERMISSIONS root.cdrw 660
		
commented out:
   # Create /dev/cdrom for the first cdrom drive
   #LOOKUP          ^cdrom$          CFUNCTION GLOBAL mksymlink cdroms/cdrom0 cdrom
   #REGISTER        ^cdroms/cdrom0$   CFUNCTION GLOBAL mksymlink $devname cdrom
   #UNREGISTER      ^cdroms/cdrom0$   CFUNCTION GLOBAL unlink cdrom
		
uncommented the following:
    # Create /dev/cdrw for the first cdrom on the scsi bus
    # (change ‘sr0’ to suite your setup)
    LOOKUP          ^cdrw$          CFUNCTION GLOBAL mksymlink sr0 cdrw
    REGISTER        ^sr0$           CFUNCTION GLOBAL mksymlink $devname cdrw
    UNREGISTER      ^sr0$           CFUNCTION GLOBAL unlink cdrw

	Result:

	
		# cdrecord -scanbus

Cdrecord 2.01a14 (i686-pc-linux-gnu) Copyright© 1995-2003 J�rg Schilling

Linux sg driver version: 3.1.24

Using libscg version ‘schily-0.7’

scsibus0:
	
        0,0,0     0) ‘MATSHITA’ ‘UJDA720 DVD/CDRW’ ‘1.03’ Removable CD-ROM
        0,1,0     1) *
        0,2,0     2) *
        0,3,0     3) *
        0,4,0     4) *
        0,5,0     5) *
        0,6,0     6) *
        0,7,0     7) *

	YAY! 

	References:

	
	How to get a CD-RW and CDROM working using Gentoo
	
	


 
    [authorid] => 1
    [authormail] => erinschnabel@gmail.com
    [authorurl] => http://ebullientworks.com/
    [category] => General
    [catid] => 1
    [closed] => 0
)