[ltp] Framebuffer on T60 (Intel 945 / SXGA+) drives me nuts

Peter Lemken linux-thinkpad@linux-thinkpad.org
Fri, 14 Sep 2007 09:37:02 +0200


Help, please,

I have had this T60 for 4 weeks now and after tinkering with it a lot, I have 
managed to get almost all components to work.

Almost.

I am unable to set the framebuffer console into its native resolution of 
1400x1050 and I haven't found any solution for this yet. I have 
unsuccessfully tried all combinations in grub's menu file, i.e. intelfb, 
vesa, vesa-tng, but I am stuck with a superlow resolution that is totally 
unsatisfactory.

There is one thing I am not sure about: I bought the T60 with a specific 
configuration in mind and the dealer did not have this model on stock. What 
he did was to change the display from an XGA version to an SXGA+ version. Is 
it possible that this is the culprit?

Does ANYONE have an Intel 945 running at 1400x1050 framebuffer console?

Here are some diagnostics:

 00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS/940GML and 945GT 
Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS/940GML 
Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/940GML Express 
Integrated Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition 
Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 
(rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 
(rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 
(rev 02)
00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 
(rev 02)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #1 
(rev 02)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #2 
(rev 02)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #3 
(rev 02)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #4 
(rev 02)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI 
Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge 
(rev 02)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller 
(rev 02)
00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) Serial 
ATA Storage Controller AHCI (rev 02)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 
02)
02:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet 
Controller
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network 
Connection (rev 02)
15:00.0 CardBus bridge: Texas Instruments PCI1510 PC card Cardbus Controller

vbetest:

[358] 1280x800 (256 color palette)
[359] 1280x800 (5:6:5)
[360] 1280x800 (8:8:8)
[263] 1280x1024 (256 color palette)
[282] 1280x1024 (5:6:5)
[283] 1280x1024 (8:8:8)
[261] 1024x768 (256 color palette)
[279] 1024x768 (5:6:5)
[280] 1024x768 (8:8:8)
[274] 640x480 (8:8:8)
[276] 800x600 (5:6:5)
[277] 800x600 (8:8:8)
[257] 640x480 (256 color palette)
[259] 800x600 (256 color palette)
[273] 640x480 (5:6:5)

ddcinfo:

edid: 1 3
id: 4022
eisa: LEN4022
serial: 00000000
manufacture: 36 2006
input: analog signal.
screensize: 29 21
gamma: 2.200000
dpms: RGB, active off, suspend, standby
timing: 720x400@70 Hz (VGA 640x400, IBM)
timing: 640x480@75 Hz (VESA)
timing: 1024x768@87 Hz Interlaced (8514A)
ctiming: 1280x1024@60
dtiming: 1400x1050@70
dtiming: 1400x1050@58
monitorid: LTD141EN9B

Thanks for your help


Peter Lemken
Berlin