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“花屏” as soon as back to console

给台机换了张好点的N卡,一切设置如驱动、xorg.conf 等全部调整 OK后,进系统、进 X 都很正常。但邪门的是只要进 X 后返回控制台则花屏,严格说也不叫花屏就是控制台显示的字会变花,类似失焦、模糊的效果,让人很难辨认,不过连猜带蒙还是可以猜一些。这就怪了,以前那张卡还差些都从来没这问题(也是N 卡,但驱动版本要低些),反而是换张好点的还出问题?

赶紧 Google 一通,返回的结果基本上都是说 grub 中 vga 参数的问题,我在 grub 中 vga 参数反复调成不同分辨率均是同样问题:第一次启动进入控制台是正常的,但只要从 X 返回控制台就一定花,除非 grub 中不加 vga,但这样控制台字大面积小,很不利命令行操作。

还有文章认为 vesafb 驱动太老,某些新显卡就会有问题,目前已有 Gentoo 新项目 uvesafb 代替。赶紧又安装设置 uvesafb,但最终效果感觉不如 vesafb 来得精细清晰,设置为同样的控制台分辨率,uvesafb 要糙得多,字也要大些,不过不花了,先凑合吧。

一般来说,像此类技术问题直接搜英文文章找答案比较容易,但我不知道类似我这种“花屏”英文用什么来表述,用了一些像:confuse, mix up, out of focus 等词语都未能找到直中要害的文章。昨天突然想到干脆把 nividia 加为关键词来搜搜看,没想到一下就找到了官方论坛上的解决方法: No more black terminals after starting X

只要在系统的显卡设置文件中设置 NVreg_UseVBios=0 即可,不同发行版略有不同,作者是 Gentoo 修改 /etc/modprobe.d/nvidia 即可,而我的 Archlinux 没有此文件,则修改 /etc/modprobe.conf ,添加一行:
[code lang=”cpp”]options nvidia NVreg_UseVBios=0[/code]

重启后 cat /proc/driver/nvidia/registry 可以看是否生效。startx 后再回到 console 完全正常了。激动啊,终于又能用回 vesafb 了。

3 Comments

  1. yang Comments @ 11:11:20 on 2008-12-18

    perfect!

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