I am having the same error, both in my Ubuntu 10.10 as well in my Ubuntu 11.04
installation.
However, I do not so much have the "flickering" that is indicated. I am faced
with a screen resolution that is stuck on 1024x768.
On release 10.10 I was able to retrieve my original screen resolution
(1440x900) by creating an xorg.conf file based on the version that is created
by "X -configure". Doing the same "trick" with 11.04 resulted in a blank
screen. I will attach the xorg.conf I am using for 10.10 as info.
This is on a Dell Dimension 2400 with an Intel graphics card:
00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE
Chipset Integrated Graphics Device (rev 01)
The monitor I have is an "AG neovo K-A19".
The kernel versions I am running are:
For 10.10: 2.6.35-27-generic
For 11.04: 2.6.38-5-generic
The versions of xserver-xorg-video-intel I am running are:
For 10.10: 2:2.12.0-1ubuntu5.2
For 11.04: 2:2.14.0-4ubuntu1
I will attach the output of dmesg for both releases for information.
The OP indicates that "sudo get-edid" works for him. For me the command (on
both releases) provides feedback but indicates it it unreliable. The result of
the command is identical on both releases:
get-edid: get-edid version 2.0.0
Performing real mode VBE call
Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0
Function supported
Call successful
VBE version 300
VBE string at 0x2110 "Intel(r)845G/845GL/845GE/845GV Graphics Chip
Accelerated VGA BIOS"
VBE/DDC service about to be called
Report DDC capabilities
Performing real mode VBE call
Interrupt 0x10 ax=0x4f15 bx=0x0 cx=0x0
Function supported
Call successful
Monitor and video card combination does not support DDC1 transfers
Monitor and video card combination supports DDC2 transfers
0 seconds per 128 byte EDID block transfer
Screen is not blanked during DDC transfer
Reading next EDID block
VBE/DDC service about to be called
Read EDID
Performing real mode VBE call
Interrupt 0x10 ax=0x4f15 bx=0x1 cx=0x0
Function supported
Call failed
The EDID data should not be trusted as the VBE call failed
@�����#��.h(x/Ӑ�YJ�$PT�����@qO��5��Q�*0`�6�� �00726
�2L R
�K-A19
If additional input is required, please let me know.
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https://bugs.launchpad.net/bugs/712075
Title:
[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid
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