I'm on an old iMac with this video card: 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV630 /M76 [Mobility Radeon HD 2600 XT/2700] (prog-if 00 [VGA controller]) Subsystem: Apple Inc. iMac 7,1 Physical Slot: 1 Flags: bus master, fast devsel, latency 0, IRQ 47 Memory at c0000000 (64-bit, prefetchable) [size=256M] Memory at d0620000 (64-bit, non-prefetchable) [size=64K] I/O ports at 3000 [size=256] Expansion ROM at d0600000 [disabled] [size=128K] Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> Kernel driver in use: radeon Whenever I suspend and then resume, I get broken graphics, wrong colors (see screenshot at http://askubuntu.com/questions/310161/broken-graphics-after-suspend-resume). Sorry if the bug report is incomplete: I'm a bit new at filing driver bugs. If you need any additional information, just let me know what to do. I hope you can help me with this: I haven't been able tot suspend for the last two years because of this.
Please attach your xorg log and dmesg output. Is this a regression (did it work at some point in the past)?
Sorry for the wait. Here are the logs taken right after a suspend/resume.
Created attachment 88147 [details] dmesg log
Created attachment 88148 [details] XOrg log
Up until Ubuntu 12.04 I used the fglrx driver. As far as I remember, I have always had this issue with the radeon driver since I've started using that.
I think that have the same after dpms, but it is not 'i' pc with hd6670. Switching to virtual console restore palette (3.11.6 with dpm). For me it is regression, and looks like it appear randomly (not every dpms).
Switching virtual consoles did nothing for me. Even the text-only console was affected.
Anything else I can try?
Anything at all?
Does booting with legacy bios mode rather than EFI work any better? Apple's EFI mode is notoriously problematic with Linux.
Any tips on how I do that? Do I need to reinstall using MBR?
I'm not really a mac expert unfortunately.
i have exactly the same problem as Romke. Let me know if there is anything I can do to provide further information about the bug.
I've gotten rid of this! I finally managed it by first setting a GPT partition table on my hard disk before installing Ubuntu Gnome.
As per https://bugs.freedesktop.org/show_bug.cgi?id=70735#c15 .
Hi Romke. Would you mind sharing some details about how you fixed this by setting a GPT table? I have decided to reinstall Ubuntu on my old Mac, so I would like to solve this problem.
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