Bug 178296
Summary: | display is too much smaller than screen | ||||||
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Product: | [Fedora] Fedora | Reporter: | Claus Olesen <colesen> | ||||
Component: | xorg-x11 | Assignee: | X/OpenGL Maintenance List <xgl-maint> | ||||
Status: | CLOSED NOTABUG | QA Contact: | David Lawrence <dkl> | ||||
Severity: | medium | Docs Contact: | |||||
Priority: | medium | ||||||
Version: | 5 | ||||||
Target Milestone: | --- | ||||||
Target Release: | --- | ||||||
Hardware: | x86_64 | ||||||
OS: | Linux | ||||||
Whiteboard: | |||||||
Fixed In Version: | Doc Type: | Bug Fix | |||||
Doc Text: | Story Points: | --- | |||||
Clone Of: | Environment: | ||||||
Last Closed: | 2006-01-31 17:58:57 UTC | Type: | --- | ||||
Regression: | --- | Mount Type: | --- | ||||
Documentation: | --- | CRM: | |||||
Verified Versions: | Category: | --- | |||||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
Cloudforms Team: | --- | Target Upstream Version: | |||||
Embargoed: | |||||||
Attachments: |
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Description
Claus Olesen
2006-01-19 07:52:59 UTC
Do you have another monitor (any brand/size/etc.) that you could give a test run of the onboard video on? It'd be interesting to see if the onboard video shows this problem for you on another monitor as well, or if it only displays this issue on the particular display you're using. It sounds like either some sort of driver specific timing problem, poor support for that particular video chip in the driver, or perhaps some funky interaction between the particular video chip and monitor combo. Do you have an easy way to test the same video adaptor with another OS as well? It'd be interesting to see if the problem occurs in FC4, FC3 or not too, or even in Windows XP, or another Linux distro, etc. Any additional information or comparisons you can provide would be helpful. Please also attach your X server log from the problematic invocation as a bugzilla file attachment, using the link below. Thanks in advance. For now this is what I have... I've attached a copy of the X server log - /var/log/Xorg.0.log I do have FC4. However, on FC4 I'm using the "via" driver posted by VIA Technologies dated 2-Dec-2005. Because FC4 does not bundle a "via" driver for x86_64. Still, for what it's worth, the problem is the exact same. In addition, no adjustment using xvidtune have any effect - the display does not change in any way. I just tried FC5Test2 again but after changing "via" to "vesa" in xorg.conf. The problem is still the exact same. xvidtune is disabled - says "video modes are not tunable on this chip". Created attachment 123509 [details]
X server log
I don't have WXP. I tried installing W2K but get a fatal error after pressing F6 for providing the motherboard driver CD with the SATA driver. I guess W2K is too old. Maybe a PATA drive would have worked but I don't have one available. But I did install FC5Test2 32bit. The problem is the exact same as under FC5Test2 64bit. Another issue. The FC5Test2 32bit installer specifies the "vesa" driver in xorg.conf. Here's an excerpt right after install Driver "vesa" VendorName "Videocard vendor" BoardName "VIA Technologies, Inc. S3 Unichrome Pro VGA Adapter" I forgot to mention that that's also the case with the FC5Test2 64bit installer. In both cases I changed "vesa" to "via" using an editor. I just installed SuSE10.1Beta1 64bit. Also it does not pick the "via" driver. Excerpt from xorg.conf Section "Device" BoardName "Framebuffer Graphics" BusID "PCI:1@0:0:0" Driver "fbdev" Identifier "Device[0]" VendorName "VESA" EndSection I then changed "fbdev" to "via". But in both cases the problem is still the exact same as under FC5Test2. (However, the graphics with "via" are much better than with "fbdev".) The problem is that different video hardware all have slightly different output, which is why displays have horizontal/vertical resizing controls, and other controls which manipulate the final output to the screen. In general, it is very unlikely to have 2 separate video cards provide a signal to a display which has 100% identical timing. As a result, if you switch a display between multiple computers, all using the same resolution (same video mode), the monitor will only remember a single setting for that resolution, and you then either need to: 1) Adjust the controls on the monitor to match the currently selected card. or 2) Use software that is part of the OS, such as xvidtune to move/center the display differently. With respect to the "barrel" like effect, the same holds true, in that each display adaptor is different, and outputs a potentially different signal to the display, which may be very similar to another adaptor enough that you wont notice the difference, but alternatively which may be very different to another adaptor in which the difference is very noticeable. The only way to solve that problem, is via the controls on the display, as there is no way to work around this problem with software. Most displays have advanced options in their menu for slight rotation/trapezoid/barrel adjustment, etc. The only other option that comes to mind, which is probably undesireable for you, is to replace one of the video adaptors (or in the case of onboard video, to add an addon board), with one with similar video output, or to buy 2 identical cards, and put one in each machine, which would increase the likelyhood of them both having identical, or very near identical output signals. Setting status to "NOTABUG" - as all video hardware by nature does not output a 100% identical signal. |