ThinkWiki - User contributions [en]

Problem with unauthorized MiniPCI network card

2007-09-12T09:05:11Z

Aquarius: /* Successful BIOS Modifications */ - another one bites the dust :)

==Problem Description==
Although the MiniPCI slot is an industry standard and can accept any MiniPCI adapter, the IBM BIOS is set to only allow you to boot with an 'authorized' adapter installed. Attempts to install an unsupported card will result in the following message:

1802: Unauthorized network card is plugged in - Power off and remove the miniPCI network card.

This is because the card's sub-vendor PCI-ID (which can be seen using ''lspci -v'') are checked against a [[Wikipedia:Whitelist|whitelist]] in the BIOS. IBM's reasoning for this is that the combination of MiniPCI card and the integrated antenna in the ThinkPad needs to be certified by the US FCC (Federal Communications Commission).{{footnote|1}} or similar agencies in other countries.

==Affected Models==
All machines with integrated WiFi, or machines with WiFi added

==Affected Operating Systems==
All - problem is in the BIOS

==Status==
* Workarounds exist for most affected models.

==Solutions==
It may be possible to use the computer with the unauthorized card deactivated (but not removed). Press {{key|F1}} to enter the BIOS and deactivate the WLAN card, then attempt to boot with the card disabled. This does not make the wireless card work, but it may allow you to boot the computer normally.

{{NOTE|Any of the following solutions should suffice to make the wireless card useable. You only need to perform one of them.}}

* You may can modify the BIOS whitelist to include the PCI-ID of the card you wish to use. The complete instructions for this procedure are [http://www.paul.sladen.org/thinkpad-r31/wifi-card-pci-ids.html here].
{{WARN|It is dangerous to mess with your BIOS, you can easily make your machine unbootable, proceed with caution!}}

* A safer and better method than modifying the BIOS is modifying the PCI-ID of the wlan card to match the authorized one(why? 1.you'll risk the wireless card instead of the motherbord 2.future BIOS updates will not create any problem 3.no problem with newer laptops with different BIOS, the only reqirement is to find an ID that is already listed in the BIOS that can be easily acheived if community maintain a compatibility table). The instructions are [http://www.dagarlas.org/stuff/computing/article0001.php here]. This page is for Atheros-based cards and HP notebooks, but it applies to Thinkpads as well. It also has links on how to edit the PCI-ID on Intel Pro Wireless cards.
Instruction for intel 2200/2915 cards are [http://stachon.webpark.cz/ipw-eeprom.html here].
{{NOTE|Modifying your PCI-ID will require either a laptop without a BIOS lock or a PCI adapter for your desktop. Also, this procedure can render your card useless, but that's better than bricking your laptop.}}

* You can use the [[Problem with error 01C9 - More than one Ethernet devices | no-1802 and no-01C9 Linux Live CD]] without applying the no-01C9 patch. It is very convenient to use and based on the C code below.

* You can use the DOS [http://jcnp.pku.edu.cn/~shadow/1802/no-1802.com no-1802] utility, written by Tisheng Chen.{{footnote|2}} It will set a certain bit in the CMOS memory which disables the whitelist check, but it has been reported not to work on the latest machines, such as the T43 and X41

* You can compile and run (as root) the following C-code, which was written by Matthew Garrett. It was based on the code written by Vojtech Pavlik, which in turn was based on the assembly used in the no-1802 program. {{footnote|3}}

<code>
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>

int main(void)
{
int fd;
unsigned char data;

fd = open("/dev/nvram", O_RDWR);
if (fd==-1) {
printf("Opening /dev/nvram failed\n");
return 1;
}
printf("Disabling WiFi whitelist check.\n");

/* BIG INFORMATIONAL WARNING */
/* The linux nvram driver doesn't give access to the first 14 bytes of
the CMOS. As a result, we seek to 0x5c rather than 0x6a. If you're
implementing this under another OS, then you'll have to go to whichever
address is appropriate for your access method */

lseek(fd, 0x5c, SEEK_SET);
read(fd, &data, 1);
printf("CMOS address 0x5c: %02x->", data);
data |= 0x80;
printf("%02x\n", data);
lseek(fd, 0x5c, SEEK_SET);
if (write(fd, &data, 1)<0) {
printf("Unable to write to /dev/nvram - hack failed\n");
close(fd);
return 2;
}
close(fd);
printf("Done.\n");
return 0;
}

</code>
{{NOTE|On the R32, T43, X41, X60 and probably others, the BIOS hacks and the "no-1802" utility don't work.}}

==Successful BIOS Modifications==
{{WARN|This table is meant to give users an idea of what models have been successfully modified and how. As stated before, it is dangerous to mess with your BIOS, you can easily make your machine unbootable. Please proceed with caution!}}

The following table contains information about ThinkPad models that have been successfully modified to run an unauthorized Mini PCI card. {{footnote|4}}

{| align="center" cellpadding="2" width="100%" style="border:1px; background:grey;"
! style="background:#efefef;"| Model
! style="background:#efefef;"| Type
! style="background:#efefef;"| BIOS Version
! style="background:#efefef;"| Operating System
! style="background:#efefef;"| Method
! style="background:#efefef;"| Success
|- style="background: white;"
| ThinkPad 240
| 2609-21G
| 1.18
| Damn Small Linux
| Matthew Garrett code {{footnote|3}}
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad G40
| 2388-2UU
| 1.21 (2006/2/24; 1TETA6WW)
| Windows XP Home
| no-1802 DOS 6.22 floppy
! style ="color:green;"| Yes
|- style="background: white;"
| ThinkPad R31
| 2656-6FG
| 3.11 (12-01-2004)
| Windows XP Boot Disk
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white;"
| ThinkPad R32
| 2656-EG1
| 2.16 (16-06-2006)
| DOS Boot Disk
| no-1802 utility
! style ="color:red;"| No
|- style="background: white;"
| ThinkPad R40
| 2656-69U
| ?
| Windows 2000 Pro
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R40
| 2681-F7G
| n/a
| Windows XP Pro SP2 w/ Intel 2200BG
| No-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R40
| 2896-J3U
| 1.24 (10-18-2005)
| Fedora Core 4
| Vojtech Pavlik code
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R40
| 2681-L7U
| 1.24 (10-18-2005)
| Windows XP Pro
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R40
| 2681-CDG
| 1.27 (10-06-2006)
| Windows XP Pro
| no-1802 LiveCD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R40
| 2722-DM2
| 1.09 (2003)
| Windows XP Pro
| no-1802 LiveCD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R40
| 2681-CFM
| 1.24 (10-17-2005)
| Gentoo & XP Pro
| no-1802 utility (boot from USB key to apply)
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R40
| 2724
| 1.30 (10-19-2005)
| FreeBSD 6.1-p1
| code by Matthew Garrett, compiled and run on bactrack
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R40
| 2724-3XU
| 1.33 (06-29-2006)
| Windows XP Pro
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R40
| 2682
| 1.01 (2003-01-24)
| Debian GNU/Linux etch (March 2007)
| Matthew Garret's code
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R40
| 2722-BDG
| 1.33 (2006/6/29)
| Lunar Linux (2007/03/04)
| Matthew Garret's code
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R50
| 1829-7RG
| 3.21 (02-06-2006)
| Windows XP Pro
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad R50p
| 1832-2AG
| 3.19 (13-10-2005)
| Ubuntu 5.10 (kernel 2.6.12-10-686)
| Vojtech Pavlik code
! style ="color:green;"| Yes
|- style="background: white; color:black;"
|ThinkPad R51
| 2887-W2C
| 1.27 (03-03-2006)
| Windows XP Pro SP2
| no-1802 utility (boot from USB key to apply)
! style ="color:green;"| Yes
|- style="background: white; color:black;"
|ThinkPad R52
| 1849-BMU
|1.27 (09-20-2006)
| Windows XP Pro SP2
| no-1802 utility (boot from external USB floppy)
! style ="color:red;"| No
|- style="background: white; color:black;"
|ThinkPad T23
| 2647-4MU
| 1.18 (08-06-2004)
| Windows XP Pro/SP2
| no-1802 utility (W98se-bootfloppy)
! style ="color:green;"| Yes
|- style="background: white; color:black;"
|ThinkPad T30
| 2366-68G
| 2.09 (08-08-2005)
| Windows XP Pro
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
|ThinkPad T30
| 2366-ES1
| 2.10
| Windows XP Pro
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T30
| 2366-97G
| 2.09 (08-08-2005)
| Windows XP Pro
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T30
| 2366-N6G
| 2.09 (08-08-2005)
| Windows XP Pro
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T30
| 2366-N6G
| 2.10 (26-06-2006)
| Windows XP Pro
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T30
| 2366-81U
| 2.10 (27-06-2006)
| Windows XP Pro
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T30
| 2366-86U
| 2.10 (27-06-2006)
| Windows XP Pro SP 2
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T30
| 2366-DU9
| 2.10 (27-06-2006)
| Suse Linux 10.1
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T40
| 2373-7CU
| 3.21
| Windows XP Pro
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T40
| 2373-4BG
| 3.21
| Windows XP Pro SP2
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T40
| 2373-7CU
| 3.21 (06-02-2006)
| Windows XP Pro SP2
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T40
| 2373-75U
| 3.21 (09-12-2006)
| Fedora 6 w Intel 2915ABG
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T40
| 2373-82U
| 3.18 (09-15-2005)
| Windows XP/ SUSE 10.1
| No-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T40
| 2373-8CG
| 3.05a (2004-05-14)
| Arch Linux
| No-1802 LiveCD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T40
| 2373-PU7
| 3.21 (09-12-2006)
| Windows XP Professional
| No-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T40
| 2373-42G
| 3.20 (11-05-2006)
| Windows 2000 Pro
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T40
| 2374-8CG
| 3.20 (11-05-2006)
| Ubuntu 6.06 LTS w/Intel Pro Lan2200
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; coloar:black;"
| ThinkPad T40
| 2374-DG1
| 3.21 (06-02-2006)
| Ubuntu 6.10 w/Broadcom 4306
| Matthew Garrett's code
! style ="color:green;"| Yes
|- style="background: white; coloar:black;"
| ThinkPad T40p
| 2373-G1G
| 3.19 (10-13-2005)
| Debian GNU/Linux (sid)
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; coloar:black;"
| ThinkPad T40p
| 2373-G5G
| 3.21 (2006-06-02)
| Windows XP Pro SP2 / Gentoo 2007.0
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T41
| 2373-1FG
| 3.21 (2007-06-18)
| Windows XP Pro SP2
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T41
| 2373-5G1
| 2004
| Fedora Core 6 w/Intel Pro 2915ABG a/b/g
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; coloar:black;"
|ThinkPad T41
| 2373-9HU
| n/a
| Ubuntu 6.10 w/Atheros 5212 a/b/g
| no-1802 Linux Live CD
! style="color:green;"| Yes
|- style="background: white; color:black;"
|ThinkPad T41
| 2373-2FG
| n/a
| Windows XP Pro SR2 w/ Intel 2200BG
| no-1802 utility
! style="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T41p
| 2373-GEG
| BIOS Build ID: 1RETDOWW(3.20)
| Gentoo / XP pro SP2
| Matthew Garrett's code {{footnote|3}}
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T41p
| 2374-GGU
| 3.21 (1RETDPWW) 6/2/2006
| Slackware / XP pro SP2
| Matthew Garrett's code
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T41
| 2373-K32
| BIOS Build ID: 1RETDOWW(3.20)
| CentOS 5.0 w/Atheros 5212 (CM9)
| Matthew Garrett's code
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T42
| 2373-4TG
| 3.13 (1RETDHWW) (29-10-2004)
| Windows XP Pro SP2 w/ Intel PRO 2200BG
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; coloar:black;"
| ThinkPad T42p
| 2373-HTU
| 3.23 (1RETDRWW) (06-18-2007)
| Windows XP Pro SP2 w/ Intel 2915ABG
| No-1802 utility
! style ="color:green;"| Yes
|- style="background: white; coloar:black;"
| ThinkPad T42
| 2373-K2G
| 3.17 (07-27-2005)
| Windows XP Pro SP2 w/ Intel 2915ABG
| No-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T42
| 2373-M1U
| 3.13 1RETDHWW (10/29/2004)
| Fedora 7 w/ Intel PRO 2200BG
| Matthew Garrett's code
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T42
| 2378-EXU
| 3.18 (09-15-2005)
| Windows XP Pro SP2
| No-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad T43
| 1871-F1G
| 1.19 (70ET59WW) (2005-09-20)
| n/a
| no-1802 Linux Live CD
! style ="color:red;"| No
|- style="background: white; color:black;"
| ThinkPad X22
| 2662-95G
| 1.32 (2003-06-10)
| Debian GNU/Linux testing, kernel 2.6.18-3-686
| Matthew Garrett's code
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X30
| 2672-41j
| 1.08 (08-09-2005)
| Gentoo Kernel 2.6.15
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X30
| 2672-4XU
| 1.09
| Win XP Pro SP2
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X30
| 2673-EU2
| 1.09
| Windows XP Pro SP2
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X31
| 2672-C2G
| 3.02 (22-09-2005)
| Debian Etch (Testing), Kernel 2.6.22-rc7
| no-1802 utility
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X31
| 2672-PG9
| 2.04 (2003-11-10)
| Debian Etch (Testing), Kernel 2.6.21-2
| Matthew Garrett's code
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X31
| 2673-C27
| 3.02 (22-09-2005)
| Ubuntu 5.10 (kernel 2.6.12-9-386)
| Matthew Garrett code {{footnote|3}}
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X31
| 2672-1UG
| 3.02 (22-09-2005)
| FreeBSD 6-STABLE
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X31
| 2672-CEG
| 3.02 (22-09-2005)
| Debian Etch (Testing), Kernel 2.6.17-2-686
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X31
| 2672-CXU
| 2.04
| Windows XP Pro
| no-1802 DOS boot CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X31
| 2672-PBU
| 3.02
| Windows XP Pro
| no-1802 DOS boot CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X31
| 2672-C8G
| 3.02
| Debian (kernel 2.6.16.20-386)
| Matthew Garrett code {{footnote|3}}
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X31
| 2672-CEG
| 2.11 (02/13/2004)
| Debian (kernel 2.6.18-4-686, gcc 4.1.2)
| Matthew Garrett code {{footnote|3}}
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X40
| 2371-8EU
| 1.42 (2004/09/16; 1UET92WW)
| Windows XP Pro
| no-1802 Linux Live CD
! style ="color:green;"| Yes
|- style="background: white; color:black;"
| ThinkPad X41
| 1866-6SU
| ?
| Windows XP Pro
| no-1802 DOS boot CD
! style ="color:red;"| No
|- style="background: white; color:black;"
| ThinkPad X41
| 2525-A2U
| 2.06 (2006/03/14; 74ET61WW)
| Windows XP Pro
| no-1802 Linux Live CD
! style ="color:red;"| No
|- style="background: white; color:black;"
| ThinkPad X41
| 2528-ELU
| 2.06 (2006/03/14; 74ET61WW)
| Windows XP Pro / OSX 10.4.8 / Ubuntu Edgy
| no-1802 Linux Live CD
! style ="color:red;"| No
|- style="background: white; color:black;"
| ThinkPad X60s
| 1702-3JU
| ?
| Debian Testing
| Matthew Garrett's code
! style ="color:red;"| NO (bricked)
|-
|}

==External Sources==
* Additional Information about "Unauthorised" MiniPCI adapters can be found on [http://www.srcf.ucam.org/~mjg59/thinkpad/wireless.html Matthew Garrett's website].

* Thinkpad Mini PCI Wireless [http://www.srcf.ucam.org/~mjg59/thinkpad/tables.html compatibility matrix].

* Bootable "no-1802" [http://www.command-tab.com/2006/02/26/unauthorized-wireless-cards/ CD and floppy image]

{{footnotes|
#This is explained in a [http://lkml.org/lkml/2003/6/3/162 message to the LKML] and subsequently [http://lkml.org/lkml/2003/6/9/50 clarified].
#The no-1802 tool was announced and explaned in a [http://mailman.linux-thinkpad.org/pipermail/linux-thinkpad/2004-June/018253.html message to the Linux-Thinkpad ML].
#Vojtech Pavlik's C-code was originally posted in a [http://lkml.org/lkml/2004/6/13/69 message to the LKML]. It was based on the assembly used in the no-1802 program. Matthew Garrett [http://www.srcf.ucam.org/~mjg59/thinkpad/hacks.html rewrote] the code to provide more error checking.
#This information has been added by users. Please feel free to add systems if you have had personal success or failure.
}}

Problem with high power drain in ACPI sleep

2006-10-17T06:08:36Z

Aquarius: /* Fedora Core */

{| width="100%"
|style="vertical-align:top;padding-right:20px;width:10px;white-space:nowrap;" | __TOC__
|style="vertical-align:top" |
==Problem description==
Several people realized that their ThinkPads eat up too much power while suspended to ram via ACPI. Compared to APM suspend to ram the power drain is experienced to be about 10 times as high, 2-5 Watts. This empties the battery within one or two days.
|}

==Affected Models==
{| border="1" cellspacing="0" cellpadding="2" style="float:right;margin-left:20px;"
|-
! style="vertical-align:top;background-color:#ffcfbc;" | affected models
! style="vertical-align:top;background-color:#cfefcf;" | unaffected models
|-
| style="vertical-align:top;background-color:#fff0e0;" |
* {{R32}}
** 2658-BQG
* {{R40}}
** 2722-3GG
** 2722-5MG
** 2722-B3G
** 2722-CDG
** 2897-GWU
** 2722-6YU
** 2722-CDG
* {{R50}}
** 1829-7RG
** 1829-6DM
** 1836-3SU
* {{R51}}
** 1829-9MG
** 1829-EHG
** 1829-R6G
** 1830-DG4
** 1836-Q6U
* {{T23}}
**2647-???
* {{T30}}
** 2366-81A
** 2366-97U
** 2366-FBU
** 2366-96G
*{{T40}}
**2373-19G
**2373-22G
**2373-42G
**2373-75G
**2373-82U
**2373-92U
**2373-A1U
**2373-MU3
*{{T40p}}
**2373-G1U
**2373-G3U
**2373-G3G
**2373-G1G
**2373-G5G
* {{T41}}
**2379-DJU
**2373-3KG
**2373-9HU
**2373-4FG
**2373-4PG
**2373-1FG
**2373-2FG
**2373-2GG
**2373-6U4
**2373-7JU
**2373-CY0
**2373-TG5
**2373-3HM
**2373-4GU
* {{T41p}}
**2373-9FU
* {{T42}}
**2373-C19
**2373-CTO
**2378-DTU
**2378-DUU
**2378-XXE
**2378-R4U
**2373-FWG
**2374-ZEP
**2373-F2G
**2373-JTU
**2373-VUW
**[[2373-6ZG]]
* {{X21}}
**2662-BSG
* {{X32}}
**2884-A3U
*{{X41T}}
** 1869-5CU
| style="vertical-align:top;background-color:#e9f9e9;" |
*[[:Category:A22m | A22m]]
**2628
*[[:Category:A31 | A31]]
**2652-D5G
*[[:Category:R50p | R50p]]
*[[:Category:R52 | R52]]
**1858-6MM
*[[:Category:T41 | T41]]
**2373-GEU
*[[:Category:T41p | T41p]]
**2373-GKG
**2373-GGG
**[[2373-GHG]]
*[[:Category:T42 | T42]]
**[[2373-M1G]]
**[[2373-WBZ]]
**[[2373-F7G]]
**[[2378-DXU]]
**[[2378-FVU]]
**[[2378-RTU]]
**[[2378-RRU]]
*[[:Category:T42p | T42p]]
**[[2373-HTG]]
**[[2373-W6M]]
**[[2373-GTG]]
**[[2373-GXG]]
**2373-KXM
*[[:Category:T43 | T43]]
**[[2668-W12]]
*[[:Category:T43p | T43p]]
**[[2668-G2G]]
*[[:Category:X40 | X40]]
**2371
|}
*Different symptoms have been reported for different models. In some models the origin of the power drain is obvious ([[Problem with LCD backlight remaining on during ACPI sleep|backlight on during suspend]]), in other models there is no obvious reason.

*On some models/configurations the higher power drain couldn't even be realized or was at least significantly lower.

*The T4x ThinkPad series and other Radeon based models suspend to ram just fine, and there are no components that are obviously left powered up. The [[UltraBay]] and network light is on, but that is the same under windows (but under APM sleep to RAM those lights are OFF). For these models the higher power drain is caused by a driver problem and can be fixed in software. This fix has not yet made its way into the official kernel (as of linux 2.6.12).

The table on the right gives an overview of the models suffering from the mysterious power drain. To find out about your model, you may use the following [[ACPI sleep power drain test script | script]]. It creates a file {{path|/var/log/battery.log}} which will tell you if you are affected or not.

==Affected Operating Systems==
*Linux, all flavours.
*Windows, for some models as well (only when using non-IBM drivers).
*FreeBSD (on the A22M)

==Status==
*The cause of the mysterious power drain is the Radeon GPU, which requires extra steps to suspend properly. Unfortunately, this fix might break non-ThinkPad machines and therefore is not yet in the official kernel sources.
*The official bugzilla entry for the radeon suspend issue is in the [http://bugme.osdl.org/show_bug.cgi?id=3022 OSDL Bugzilla]. There you can find a patch which will solve the power drain issue.
{{WARN|This solution enables doing suspend-to-D2 on non-PPC-machines, which is not properly documented! Be careful and have a look at the discussion for kernel bug 3022 (see above) before applying the patch. By default, the patch enables the suspend-to-D2 only on machines where it is known to work. This behaviour can be overridden with a module option.}}
{{NOTE|This solution is on its way for inclusion into the mainline Linux kernel, but the whitelist required for its inclusion needs your help. Please send mail to ''patroclo7 at gmail.com'' with the output of '''lspci -d "1002:*" -vn''' on affected machines ''only''. Refer to [http://thread.gmane.org/gmane.linux.hardware.thinkpad/25355 the linux-thinkpad ML post requesting this information] for more information. This is mostly urgent if you happen to own an X21 or a R50.}}
*Most certainly, the DSDT is not at fault. (Interesting to note: The DSDT from BIOS 3.13 (Nov 04) for the T42p compiles without bugs.)
*Some additional power savings can be achieved by turning off the wake-on-lan ({{cmdroot|ethtool -s eth0 wol d}}). The power drain of the wol feature is far smaller than the radeon bug, but can be noticeable.

==Solutions==
===For ThinkPads with Radeon graphic chips===
You must use a patched version of the radeon frame buffer, even if you are only interested in using the X window system. This modified radeon frame buffer then suspends the radeon chip correctly during ACPI sleep. This patch is not yet in the official (kernel.org) kernels.

The [http://bugme.osdl.org/attachment.cgi?id=8220&action=view patch] contains a list of ThinkPads where it is known to work, and by default only activates on these machines. If you think that your computer would profit from the patch as well, you can force it by including the module parameter {{bootparm|force_sleep|1}}. If it doesn't work this can result in system hangs.

====Technical Background====
The patch removes the CONFIG_PPC_PMAC condition for enabling D2 sleep in {{path|drivers/video/aty/radeon_pm.c}} as discussed in [http://bugme.osdl.org/show_bug.cgi?id=3022 kernel bug 3022].

====Fedora Core====
* Fedora Core 5: The latest kernel from updates (2.6.18-1.2200.fc5) seems to actually fix this issue, you only have to make custom initrd because the default one does not contain radeonfb.
* Fedora Core 4: Fedora ships a patched radeon frame buffer (radeonfb.ko), but you must enable it yourself. {{Fedora}} compiles it as a module rather than including it in the kernel, therefore you cannot activate it at boot time without a custom initrd. You must arrange for the module to be loaded before X starts (for example, using an init script).
* Fedora Core 3: this is also true for updated kernels (at least for kernel-2.6.12-1.1376_FC3) but '''not''' for the initially shipped version.

There are precompiled patched kernels [http://www.sas.upenn.edu/~vbraun/computing/T41/kernel.html available] as well, that do not need an initrd modification:
*[http://carrot.hep.upenn.edu/~vbraun/kernel-T4x/i386/kernel-T4x-2.6.11.11-26.i386.rpm linux 2.6.11 for Fedora Core 3]
*[http://carrot.hep.upenn.edu/~vbraun/kernel-T4x/i386/kernel-T4x-2.6.12.2-2.i386.rpm linux 2.6.12 for Fedora Core 4]
These kernels contain additional ThinkPad-related patches, including [[Software Suspend 2]] and trackpoint support. Suspend to disk and suspend to ram should work with them. If your ThinkPad model is not yet whitelisted in the patch, you might have to enable the radeon fix by including the parameter {{bootparm|video|2=radeonfb:force_sleep}} on the kernel command line.

If you try, please send the result (hang yes/no, battery drain yes/no) with the precise model number (i.e. IBM ThinkPad T41 2379-DJU) to <tt>vbraun at physics dot upenn dot edu</tt>, it would be nice if your subject line would include "RADEONFB:" to make sure that I do not miss any emails.

=====testing radeonfb without changing initrd=====
If you want to try the radeon frame buffer, you can enable it as follows:
*First, switch to a console ({{key|Ctrl}}{{key|Alt}}{{key|F1}}) and log in as root.
*Stop X: {{cmdroot|init 3}}
*Now you can load the module: {{cmdroot|1=modprobe radeonfb force_sleep=1}}
*Finally, resume X: {{cmdroot|init 5}}

=====including radeonfb into your initrd=====
As an alternative you can build your customized initrd. This is as simple as running
:{{cmdroot|1=mkinitrd --with=radeonfb /boot/<name-of-your-new-initrd> `uname -r`}}
and replacing the initrd in {{path|/boot/grub/grub.conf}} with your new one. You also need to add the kernel command line argument {{bootparm|video|2=radeonfb:force_sleep}}.

====Gentoo====
After installing the patch on {{Gentoo}} (it works fine with gentoo-sources: {{cmdroot|cd /usr/src/linux/drivers/video/aty}}, and execute {{cmdroot|patch -p4 < <patchname>}}, then recompile the kernel), one needs to add {{bootparm|video|radeonfb:force_sleep}} to the kernel parameters.

====Another possible solution====
It is possible that [[radeontool]] will help some people with this case.
(simply run radeontool light off before suspend and radeontool light on after resume).
A radeontool patch for freebsd is here: http://www.init-main.com/radeontool.patch (by Takanori Watanabe).

===For models without Radeon graphics===
The Problem seems to be solved when you use the [http://www.srcf.ucam.org/~mjg59/vbetool/ vbetool] to turn the LCD off before suspending ...
:{{cmdroot|vbetool dpms off}}
and turning it on afterwards again...
:{{cmdroot|vbetool dpms on}}
You have to change to a normal console before turning the LCD off.
Additionally you have to deactivate the Wake-On-Lan feature like mentioned above ...
:{{cmdroot|ethtool -s eth0 wol d}}
With these commands used together the "testing script" reports no high power drain while suspending.

==Other problems causing the power drain==
On my [[R51]] using Gentoo Linux, the high power drain was not caused by the graphics adaptor but by several components not powered down properly before putting the Thinkpad into S3.

If the above did not help you, this might do:

Walk through
/sys/devices/*/*/power/state
and try to disable each of it, every time checking the power drain. (See linux/Documentation/power/devices.txt for values to write into the state-files. 3 should be the value you want to try)
Do the same for other components (Like the Ultrabay, etc.). Please add your experiences here.

===R51: Ultrabay and networking===
On my system, ultrabay and networking light were still on while in S3. So were the devices theirselves.
echo -n eject > /proc/acpi/ibm/bay # Disable ultrabay
ethtool -s eth0 wol d # Disable Wake-On-Lan (And so the eth-adaptor)
echo mem > /sys/power/state # Sleep

For me, this lowered the power drain from >700mW to 338 mW.

===USB===
My initial testing of a [[T43]] (2669-model) revealed no power drain issues. However, after several rounds of BIOS and kernel upgrades I have discovered that the power drain has risen to >700mWh. Having tested things a bit, I have discoved that removing ehci_hcd module solved the high power drain. This is a [[T43]] laptop, with kernel 2.6.17-r5 and BIOS 1.28/EC 1.06. For me, issuing {{cmdroot|modprobe -r ehci_hcd}} before going to sleep and reloading the module ({{cmdroot|modprobe ehci_hcd}}) after waking up dropped the power drain down to 277mWh in suspend2ram, which seems fair. The unloading/reloading can be put into the suitable ACPI script called to suspend the laptop.