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Using a regular 2011 imac 21,5" with AMD radeon hd 6770m and ubuntu
12.04 mac specific 64bits; installing the 'additional drivers' non post
update fglrx, be it with an updated system or not, results in a black
screen at the next ubuntu login screen; ubuntu recovery failsafex cannot
initiate ubuntu anymore saying ''no suitable screen were found'; only by
just loadind ubuntu recovery and type reboot at recovery command line
mode can I acess ubuntu partition once only, before having to repeat the
process. In rare cases one must also type 'aticonfig --initial' to login
once at ubuntu before it returning to the black screen state at the next
boot.
The only way to get out of the blackscreen for the procedures above is
by rebooting the mac using its powerbutton.
fglrx 'post-update' do not even install, being the system updated or
not. AMD site radeon driver from the site does not work if an ubuntu
specific package is generated(it also seems this is the package used by
ubuntu); only the plain non ubuntu AMD driver install to Xorg truly
works(no more black screens), the distorted ubuntu initial logo before
login shows the driver was truly recognized(nvidia also distorts the
logo when recognized), also the solution mentioned only works if you
have a clean install of ubuntu(the home folder does not matter, no clean
install of /home is needed)
The ati driver package at ubuntu repository from software center seems
to be the regular fglrx non post update, so, same results.
The Ubuntu Open source driver works, but is slower even to get a login
screen, also it is useless for true 3d graphics(like games) for my video
card model(AMD radeon hd 6770m).
For drivers which were 'tested by ubuntu developers' me and countless
others expected more.
I cannot test this right now, as to test this I should wreck my ubuntu
desktop again; and my internet connection isn't restored yet(very low
speeds); and the testing is a bit dangerous to my hardware I guess, as I
got a very soft 'stain' at my screen, exactly where the ubuntu unity
left dock use to stay(perfectly at the dock right limits) which persists
though mac boot and my OS X system and which only appeared after the
several video driver attempts above.
** Affects: fglrx-installer (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: bot-comment
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Black screen at login after any ubuntu AMD radeon driver install
https://bugs.launchpad.net/bugs/1004546
You received this bug notification because you are a member of Ubuntu-X, which
is subscribed to fglrx-installer in Ubuntu.
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