Same problem here on a IBM T42 with Radeon graphics.
$ ddcprobe
vbe: VESA 2.0 detected.
oem: ATI MOBILITY RADEON 9600
memory: 65472kb
mode: 320x200x32k
mode: 320x200x64k
mode: 320x200x16m
mode: 1600x1200x256
mode: 640x400x256
mode: 640x480x256
mode: 640x480x32k
mode: 640x480x64k
mode: 640x480x16m
mode: 1600x1200x32k
mode: 800x600x256
mode: 800x600x32k
mode: 800x600x64k
mode: 800x600x16m
mode: 1600x1200x64k
mode: 1024x768x256
mode: 1024x768x32k
mode: 1024x768x64k
mode: 1024x768x16m
mode: 1280x1024x256
mode: 1280x1024x32k
mode: 1280x1024x64k
mode: 1280x1024x16m
edid:
edidfail
$ lspci
00:00.0 Host bridge: Intel Corporation 82855PM Processor to I/O Controller (rev
03)
00:01.0 PCI bridge: Intel Corporation 82855PM Processor to AGP Controller (rev
03)
00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M)
USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M)
USB UHCI Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M)
USB UHCI Controller #3 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI
Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 81)
00:1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge
(rev 01)
00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev
01)
00:1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus
Controller (rev 01)
00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)
00:1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97
Modem Controller (rev 01)
01:00.0 VGA compatible controller: ATI Technologies Inc RV350 [Mobility Radeon
9600 M10]
02:00.0 CardBus bridge: Texas Instruments PCI4520 PC card Cardbus Controller
(rev 01)
02:00.1 CardBus bridge: Texas Instruments PCI4520 PC card Cardbus Controller
(rev 01)
02:01.0 Ethernet controller: Intel Corporation 82540EP Gigabit Ethernet
Controller (Mobile) (rev 03)
02:02.0 Network controller: Intel Corporation PRO/Wireless 2200BG Network
Connection (rev 05)
$ fbset
mode "1400x1050-77"
# D: 147.037 MHz, H: 83.166 kHz, V: 77.436 Hz
geometry 1400 1050 1400 1050 16
timings 6801 168 32 16 4 168 4
rgba 5/11,6/5,5/0,0/0
endmode
I booted with vga=0x342 for 1400x1050 mode, but I get the same symptoms
as the original poster.
Thanks!
--
vesafb sets the refresh rate too high for some LCDs
https://bugs.launchpad.net/bugs/127168
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Bugs, which is the bug contact for Ubuntu.
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