I have twice installed Linux Mint on an 2011 iMac. It is 21.5 inch with
AMD Radeon HD 6750M 512 MB graphics and 2.5 GHz Intel Core i5.
Every time I install Linux Mint, it boots correctly a couple times but
then simply displays a totally blank screen when booted up.
Once this happens, the system
Hans Matros, to see if this is resolved upstream, could you use the
latest kernel 4.15.1 without the WORKAROUND?
If it has boot issues, please provide details via
https://wiki.ubuntu.com/DebuggingKernelBoot .
Also, when providing dmesg, please don't grep/cut/snip logs. Post them
in full.
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** Description changed:
- Dear community!
+ Using Ubuntu 16.04 through 17.10, when I boot the screen is black, ping
+ and ssh to the host does not work, and the fan is running. Same problem
+ with kernel 4.14 and 4.15RC7.
- I have installed Ubuntu 17.10 (also tried 17.04 and 16.04), and the
-
Thanks for your support. I have created an upstream bug report:
https://bugs.freedesktop.org/show_bug.cgi?id=104738
** Bug watch added: freedesktop.org Bugzilla #104738
https://bugs.freedesktop.org/show_bug.cgi?id=104738
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Please file an upstream bug at https://bugs.freedesktop.org/
Product: DRI
Component: DRM/radeon
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https://bugs.launchpad.net/bugs/1743427
Title:
Black screen with iMac 2011
Thanks this kernel version can boot the system, but the performance of
the UI have a problem. Everything lags and also with youtube video's
there are a lot of frame drops.
dmesg | grep -i radeon
[1.371941] [drm] radeon kernel modesetting enabled.
[1.514874] fb: switching to radeondrmfb
Can you test the mainline kernel?
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15-rc8
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https://bugs.launchpad.net/bugs/1743427
Title:
Black screen with iMac 2011 and
Dear Kai-Heng Feng!
Thanks for your response. I have tried your kernel version, but it is
the same bug with the black screen.
Best regards,
Hans
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** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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Please try this kernel, http://people.canonical.com/~khfeng/lp1743427/
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https://bugs.launchpad.net/bugs/1743427
Title:
Black screen with iMac 2011 and ATI Radeon 6970M
** Attachment removed: "JournalErrors.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743427/+attachment/5037464/+files/JournalErrors.txt
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** Attachment removed: "WifiSyslog.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743427/+attachment/5037473/+files/WifiSyslog.txt
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apport information
** Tags added: apport-collected artful
** Description changed:
Dear community!
I have installed Ubuntu 17.10 (also tried 17.04 and 16.04), and the
system gets a black screen on boot with all tested Ubuntu versions. Also
ping and ssh to the host does not work. The
** Project changed: launchpad => linux (Ubuntu)
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Title:
Black screen with iMac 2011 and ATI Radeon 6970M
Status in linux package
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