1680*1050 etc. cannot be set in spite of 915resolution - DDC failure over DVI(-ADD)?
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xserver-xorg-video-intel (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: xserver-
High resolutions of recent TFTs cannot properly be set for DVI, let alone have the monitor's capacities autodetected, with this driver in Ubuntu 6.10 (limiting the resolution to 1024*768), cf. these excerpts from /var/log/
(II) I810(0): Display Info: CRT: attached: FALSE, present: FALSE, size: (0,0)
(II) I810(0): Display Info: TV: attached: FALSE, present: FALSE, size: (0,0)
(II) I810(0): Display Info: DFP (digital flat panel): attached: FALSE, present: FALSE, size: (0,0)
(II) I810(0): Display Info: LFP (local flat panel): attached: FALSE, present: FALSE, size: (0,0)
(II) I810(0): Display Info: Second (second CRT): attached: FALSE, present: FALSE, size: (0,0)
(II) I810(0): Display Info: TV2 (second TV): attached: FALSE, present: FALSE, size: (0,0)
(II) I810(0): Currently active displays on Pipe A:
(II) I810(0): DFP (digital flat panel)
(II) I810(0): No display size information available for pipe A.
(==) I810(0): Display is using Pipe A
(--) I810(0): Maximum frambuffer space: 65368 kByte
(II) Loading sub module "ddc"
(II) LoadModule: "ddc"
(II) Reloading /usr/lib/
(II) I810(0): VESA VBE DDC supported
(II) I810(0): VESA VBE DDC Level none
(II) I810(0): VESA VBE DDC transfer in appr. 0 sec.
(II) I810(0): VESA VBE DDC read failed
(--) I810(0): A non-CRT device is attached to pipe A.
No refresh rate overrides will be attempted.
(--) I810(0): Maximum space available for video modes: 12288 kByte
Mode: 30 (640x480)
[...]
Mode: 3a (1680x1050)
[...]
Mode: 4b (1680x1050)
[...]
Mode: 5a (1680x1050)
[...](II) I810(0): Generic Monitor: Using hsync range of 28.00-84.00 kHz
(II) I810(0): Generic Monitor: Using vrefresh range of 43.00-60.00 Hz
(II) I810(0): Not using mode "1680x1050" (no mode of this name)
(--) I810(0): Virtual size is 1024x768 (pitch 1024)
(**) I810(0): *Built-in mode "1024x768"
(**) I810(0): *Built-in mode "800x600"
(**) I810(0): *Built-in mode "640x480"
(==) I810(0): DPI set to (75, 75)
(II) Loading sub module "fb"
There are similar failure reports for EDID over conventional VGA:
http://
The "intel" alternative ("modesetting" branch) will not currently compile anymore on Ubuntu 6.10, though, cf. http://
In Ubuntu 7.04 "Feisty Fawn" finally this problem can be overcome by entering xorg-video- intel xorg-video- i810 (with broken EDID/DDC) and properly auto-detect at least 1680*1050 DVI TFTs.
apt-get install xserver-
which will replace the default xserver-
This comes with a plethora of (ignored) warnings on install, though (that the next user to try out this driver is asked to post here for everyone to "enjoy"), and somewhat confusingly leaves the original /etc/X11/xorg.conf (still mentioning the removed driver) in place:
Section "Device"
Identifier "Intel Corporation 82865G Integrated Graphics Controller"
Driver "i810"
BusID "PCI:0:2:0"
EndSection
In other words, the default (including Live CD) configuration is not usable at physical resolution with standard widescreen monitors on integrated Intel graphics, and even now that there is a workaround (alternate driver), this is hard to find for the average user.