Bug 47868
| Summary: | Fonts do not scale with the Xserver DPI setting | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Robert Clark <robert3> |
| Component: | XFree86 | Assignee: | Mike A. Harris <mharris> |
| Status: | CLOSED NOTABUG | QA Contact: | David Lawrence <dkl> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.1 | CC: | otaylor |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2001-07-10 19:24:11 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: | |||
For most cases, this is normal and expected behavior -- X only comes with two varieties of fonts -- 75dpi and 100dpi, and the choice between them is determined by the order of your fontpath. (/etc/X11/fs/config) Some programs may take resolution into account beyond this -- for instance, GTK+ version 2.0 ignores the resolution setting for fonts and picks the nearest bitmap font based on the pixel size of the fonts and the resolution -- but this is not common behavior currently. I don't know the details of the algorithm that mozilla uses for choosing font sizes. You might want to try switching to a scaleable font (such as URW Helvetica, insetad of Adobe Helvetica) and see if that makes it more responsive to resolution changes. Indeed, as Owen has said, X comes with 75dpi and 100dpi fonts only, and scalable fonts. If the fonts do not look great, don't use the 100dpi/75dpi fonts, but instead use Type1 and truetype which looks great. |
Description of Problem: The Xserver's dpi setting (as probed by the ddc module or set with the -dpi flag) has no effect on the size of fonts. This is a particular problem when running X in high resolution modes (e.g. 1600x1200) where the dpi can be 135 leading to unreadable fonts. How Reproducible: Every Time Steps to Reproduce: 1. Run "X -dpi n :1 & xterm -display :1". Replace n with a dpi value. 2. Run a program which allows you to view different fonts (e.g. gfontsel or mozilla). Note the size of a large (e.g. 72pt) font. 3. Repeat for different n. Actual Results: The font sizes are identical at different values of n. Expected Results: Changing n from 100 to 150 should result in a noticable increase in the size of a font. Additional Information: Tested with XFree86-4.0.3-5 from 7.1 and 4.03-22 from RawHide with both ATI Radeon QD rev 0 (both "radeon" and "ati" drivers) and NVidia GeForce2 GTS rev 163 ("nvidia driver) with NVidia GLX & kernel module v1.0-1251. Tested with and without xfs. Also tried adjusting the value of the default-resolutions parameter in /etc/fs/config. Tested with bitmap, type1 and TrueType fonts. The dpi setting in Mozilla doesn't seem to make a difference either.