Bug 238300
Summary: | setfont makes screen flicker | ||
---|---|---|---|
Product: | [Fedora] Fedora | Reporter: | n0dalus <n0dalus+redhat> |
Component: | kbd | Assignee: | Vitezslav Crhonek <vcrhonek> |
Status: | CLOSED DUPLICATE | QA Contact: | |
Severity: | medium | Docs Contact: | |
Priority: | medium | ||
Version: | rawhide | CC: | covex |
Target Milestone: | --- | ||
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2008-02-29 15:17:23 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: |
Description
n0dalus
2007-04-29 02:30:08 UTC
Fixed summary -- sorry for the bugspam. Hi, there's no problem to read current font to user space. But your proposed solution will not help, because the screen resets when you are reading font to user space too, not only when you are loading new one into kernes space. Try: setfont -o foo.bar Also it looks like very hardware depending problem, on some machines no flickering, on my machine time to time... On your machine screen resets everytime you call setfont? You're right that there's not much that can be done about the problem in setfont if reading the font causes the flicker. There are two other solutions to the problem though: 1) Only call setfont once on boot, and then don't call it again. This would fix the described problem of constant flickering on boot. There should be no reason to need to repeatedly set the font -- if there is, that's a bug in something else. 2) Implement a solution in the kernel The vgacon_do_font_op function makes a lot of VGA calls regardless of whether the font is being 'get' or 'set'. http://lxr.linux.no/source/drivers/video/console/vgacon.c?v=2.6.18#L1078 It's very likely that some of those commands are not necessary when just reading the font memory. I'm not sure who would be most qualified to make some changes here. *** Bug 245478 has been marked as a duplicate of this bug. *** The bug is filled against Fedora rawhide, but I have this bug now in RHEL 5.1. I had previously F7 and F8. F7 had this bug for sure. But I remember somewhere between F7 and F8 this bug was solved. ¿Perhaps initscripts-8.54.1-1.i386.rpm? I can do some testing in RHEL 5.1 if required. Some research here. Look at bug #237839 Comment #14 From Bill Nottingham (notting) on 2008-02-27 11:32 EST [reply] Fixed in 8.64-1. |