Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | |
2 | Video issues with S3 resume | |
3 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
4 | 2003-2005, Pavel Machek | |
5 | ||
6 | During S3 resume, hardware needs to be reinitialized. For most | |
7 | devices, this is easy, and kernel driver knows how to do | |
8 | it. Unfortunately there's one exception: video card. Those are usually | |
9 | initialized by BIOS, and kernel does not have enough information to | |
10 | boot video card. (Kernel usually does not even contain video card | |
11 | driver -- vesafb and vgacon are widely used). | |
12 | ||
13 | This is not problem for swsusp, because during swsusp resume, BIOS is | |
14 | run normally so video card is normally initialized. S3 has absolutely | |
15 | no chance of working with SMP/HT. Be sure it to turn it off before | |
16 | testing (swsusp should work ok, OTOH). | |
17 | ||
18 | There are a few types of systems where video works after S3 resume: | |
19 | ||
20 | (1) systems where video state is preserved over S3. | |
21 | ||
22 | (2) systems where it is possible to call the video BIOS during S3 | |
23 | resume. Unfortunately, it is not correct to call the video BIOS at | |
24 | that point, but it happens to work on some machines. Use | |
25 | acpi_sleep=s3_bios. | |
26 | ||
27 | (3) systems that initialize video card into vga text mode and where | |
28 | the BIOS works well enough to be able to set video mode. Use | |
29 | acpi_sleep=s3_mode on these. | |
30 | ||
31 | (4) on some systems s3_bios kicks video into text mode, and | |
32 | acpi_sleep=s3_bios,s3_mode is needed. | |
33 | ||
34 | (5) radeon systems, where X can soft-boot your video card. You'll need | |
35 | new enough X, and plain text console (no vesafb or radeonfb), see | |
36 | http://www.doesi.gmxhome.de/linux/tm800s3/s3.html. Actually you | |
37 | should probably use vbetool (6) instead. | |
38 | ||
39 | (6) other radeon systems, where vbetool is enough to bring system back | |
40 | to life. It needs text console to be working. Do vbetool vbestate | |
41 | save > /tmp/delme; echo 3 > /proc/acpi/sleep; vbetool post; vbetool | |
42 | vbestate restore < /tmp/delme; setfont <whatever>, and your video | |
43 | should work. | |
44 | ||
45 | (7) on some systems, it is possible to boot most of kernel, and then | |
46 | POSTing bios works. Ole Rohne has patch to do just that at | |
47 | http://dev.gentoo.org/~marineam/patch-radeonfb-2.6.11-rc2-mm2. | |
48 | ||
49 | Now, if you pass acpi_sleep=something, and it does not work with your | |
50 | bios, you'll get a hard crash during resume. Be careful. Also it is | |
51 | safest to do your experiments with plain old VGA console. The vesafb | |
52 | and radeonfb (etc) drivers have a tendency to crash the machine during | |
53 | resume. | |
54 | ||
55 | You may have a system where none of above works. At that point you | |
56 | either invent another ugly hack that works, or write proper driver for | |
57 | your video card (good luck getting docs :-(). Maybe suspending from X | |
58 | (proper X, knowing your hardware, not XF68_FBcon) might have better | |
59 | chance of working. | |
60 | ||
61 | Table of known working systems: | |
62 | ||
63 | Model hack (or "how to do it") | |
64 | ------------------------------------------------------------------------------ | |
65 | Acer Aspire 1406LC ole's late BIOS init (7), turn off DRI | |
66 | Acer TM 242FX vbetool (6) | |
67 | Acer TM C300 vga=normal (only suspend on console, not in X), vbetool (6) | |
68 | Acer TM 4052LCi s3_bios (2) | |
69 | Acer TM 636Lci s3_bios vga=normal (2) | |
70 | Acer TM 650 (Radeon M7) vga=normal plus boot-radeon (5) gets text console back | |
71 | Acer TM 660 ??? (*) | |
72 | Acer TM 800 vga=normal, X patches, see webpage (5) or vbetool (6) | |
73 | Acer TM 803 vga=normal, X patches, see webpage (5) or vbetool (6) | |
74 | Acer TM 803LCi vga=normal, vbetool (6) | |
75 | Arima W730a vbetool needed (6) | |
76 | Asus L2400D s3_mode (3)(***) (S1 also works OK) | |
77 | Asus L3800C (Radeon M7) s3_bios (2) (S1 also works OK) | |
78 | Asus M6NE ??? (*) | |
79 | Athlon64 desktop prototype s3_bios (2) | |
80 | Compal CL-50 ??? (*) | |
81 | Compaq Armada E500 - P3-700 none (1) (S1 also works OK) | |
82 | Compaq Evo N620c vga=normal, s3_bios (2) | |
83 | Dell 600m, ATI R250 Lf none (1), but needs xorg-x11-6.8.1.902-1 | |
84 | Dell D600, ATI RV250 vga=normal and X, or try vbestate (6) | |
85 | Dell Inspiron 4000 ??? (*) | |
86 | Dell Inspiron 500m ??? (*) | |
87 | Dell Inspiron 600m ??? (*) | |
88 | Dell Inspiron 8200 ??? (*) | |
89 | Dell Inspiron 8500 ??? (*) | |
90 | Dell Inspiron 8600 ??? (*) | |
91 | eMachines athlon64 machines vbetool needed (6) (someone please get me model #s) | |
92 | HP NC6000 s3_bios, may not use radeonfb (2); or vbetool (6) | |
93 | HP NX7000 ??? (*) | |
94 | HP Pavilion ZD7000 vbetool post needed, need open-source nv driver for X | |
95 | HP Omnibook XE3 athlon version none (1) | |
96 | HP Omnibook XE3GC none (1), video is S3 Savage/IX-MV | |
97 | IBM TP T20, model 2647-44G none (1), video is S3 Inc. 86C270-294 Savage/IX-MV, vesafb gets "interesting" but X work. | |
98 | IBM TP A31 / Type 2652-M5G s3_mode (3) [works ok with BIOS 1.04 2002-08-23, but not at all with BIOS 1.11 2004-11-05 :-(] | |
99 | IBM TP R32 / Type 2658-MMG none (1) | |
100 | IBM TP R40 2722B3G ??? (*) | |
101 | IBM TP R50p / Type 1832-22U s3_bios (2) | |
102 | IBM TP R51 ??? (*) | |
103 | IBM TP T30 236681A ??? (*) | |
104 | IBM TP T40 / Type 2373-MU4 none (1) | |
105 | IBM TP T40p none (1) | |
106 | IBM TP R40p s3_bios (2) | |
107 | IBM TP T41p s3_bios (2), switch to X after resume | |
108 | IBM TP T42 ??? (*) | |
109 | IBM ThinkPad T42p (2373-GTG) s3_bios (2) | |
110 | IBM TP X20 ??? (*) | |
111 | IBM TP X30 ??? (*) | |
112 | IBM TP X31 / Type 2672-XXH none (1), use radeontool (http://fdd.com/software/radeon/) to turn off backlight. | |
113 | IBM Thinkpad X40 Type 2371-7JG s3_bios,s3_mode (4) | |
114 | Medion MD4220 ??? (*) | |
115 | Samsung P35 vbetool needed (6) | |
116 | Sharp PC-AR10 (ATI rage) none (1) | |
117 | Sony Vaio PCG-F403 ??? (*) | |
118 | Sony Vaio PCG-N505SN ??? (*) | |
119 | Sony Vaio vgn-s260 X or boot-radeon can init it (5) | |
120 | Toshiba Libretto L5 none (1) | |
121 | Toshiba Satellite 4030CDT s3_mode (3) | |
122 | Toshiba Satellite 4080XCDT s3_mode (3) | |
123 | Toshiba Satellite 4090XCDT ??? (*) | |
124 | Toshiba Satellite P10-554 s3_bios,s3_mode (4)(****) | |
125 | Uniwill 244IIO ??? (*) | |
126 | ||
127 | ||
128 | (*) from http://www.ubuntulinux.org/wiki/HoaryPMResults, not sure | |
129 | which options to use. If you know, please tell me. | |
130 | ||
131 | (***) To be tested with a newer kernel. | |
132 | ||
133 | (****) Not with SMP kernel, UP only. | |
134 | ||
135 | VBEtool details | |
136 | ~~~~~~~~~~~~~~~ | |
137 | (with thanks to Carl-Daniel Hailfinger) | |
138 | ||
139 | First, boot into X and run the following script ONCE: | |
140 | #!/bin/bash | |
141 | statedir=/root/s3/state | |
142 | mkdir -p $statedir | |
143 | chvt 2 | |
144 | sleep 1 | |
145 | vbetool vbestate save >$statedir/vbe | |
146 | ||
147 | ||
148 | To suspend and resume properly, call the following script as root: | |
149 | #!/bin/bash | |
150 | statedir=/root/s3/state | |
151 | curcons=`fgconsole` | |
152 | fuser /dev/tty$curcons 2>/dev/null|xargs ps -o comm= -p|grep -q X && chvt 2 | |
153 | cat /dev/vcsa >$statedir/vcsa | |
154 | sync | |
155 | echo 3 >/proc/acpi/sleep | |
156 | sync | |
157 | vbetool post | |
158 | vbetool vbestate restore <$statedir/vbe | |
159 | cat $statedir/vcsa >/dev/vcsa | |
160 | rckbd restart | |
161 | chvt $[curcons%6+1] | |
162 | chvt $curcons | |
163 | ||
164 | ||
165 | Unless you change your graphics card or other hardware configuration, | |
166 | the state once saved will be OK for every resume afterwards. | |
167 | NOTE: The "rckbd restart" command may be different for your | |
168 | distribution. Simply replace it with the command you would use to | |
169 | set the fonts on screen. |