Which version of Ubuntu are you using? Can you please paste the output
of uname -srm?
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1307097
Title:
Blank / Black screens on boot half the time [R9 280X]
Status in Ubuntu GNOME:
Invalid
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
I have 3 monitors hooked up.
Roughly every other time I reboot, I get past my grub screen and then
the left and right side monitors are on and "awake" but blank, and the
center screen never comes out of sleep mode.
The boot never progresses past this point and you can't switch to
another virtual console or anything. It's just apparently frozen
there.
If I hit the reset button on the case, it usually boots to the login
screen just fine the next time around.
From Details:
Memory: 11.7 GiB
Processor: Intel® Core™ i7 CPU 965 @ 3.20GHz × 8
Graphics: Gallium 0.4 on AMD TAHITI
OS type: 64-bit
System up to date
From lspci -vv:
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Tahiti XT [Radeon HD 7970/8970 OEM / R9 280X] (prog-if 00 [VGA controller])
Subsystem: PC Partner Limited / Sapphire Technology Device 3000
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 256 bytes
Interrupt: pin A routed to IRQ 80
Region 0: Memory at d0000000 (64-bit, prefetchable) [size=256M]
Region 2: Memory at fba80000 (64-bit, non-prefetchable) [size=256K]
Region 4: I/O ports at b000 [size=256]
Expansion ROM at fbac0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: radeon
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