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Bug#655505: Testing (Wheezy): No usable screen



Hi Oliver,

Oliver Scholl <os.news@gmx.de> (04/12/2012):
> Package: Debian-Boot
> Distribution: wheezy
> Bug#655505
> 
> On 11. Januar 2012 I wrote the following bug report (http://lists.debian.org/debian-boot/2012/01/msg00112.html):
> 
> I installed Debian Testing (Wheezy) from CD-ROM (net-install) on my
> netbook Asus EeePC 1015BX. The installation worked fine but when I
> removed the CD-ROM and rebooted the netbook I didn't get a usable
> screen. The screen is totally unusable, many black, grey and white
> lines and dots, no text is visible. For your information the
> x-server is not installed yet. On the other hand Debian Stable
> (Squeeze) works fine on my netbook.

if the intarwebz are correct, that laptop comes up with an AMD/ATI
graphic card. I suspect what you're seeing is troubles with radeon KMS
without the needed firmware. If you have SSH access, you could install
firmware-linux-nonfree, reboot and enjoy. Otherwise, you can boot with
disabled KMS and perform the same package installation (adding the
following to the linux command line at the linux prompt:
radeon.nomodeset=1).

Latest linux kernels have a workaround to disable KMS from being
loaded if firmwares are missing, so next installation images (rc1)
shouldn't have this problem anymore.

> Now (25. Nov. 2012) I gave it another try with the official
> debian-wheezy-live-a2-i386-lxde-desktop.img now. But the problem is
> still the same: it hangs up with a black and white pixeled screen
> (just like heavy snowfall). In failsafe mode it's the same. Boot
> option vga=0 has no effect too. Because I can't see anything on the
> screen I can't read any messages nor have a look at a log file.

I have no knowledge on the debian live side, sorry.

Mraw,
KiBi.

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