Public bug reported: After suspend / resume, screen is blank. The video card in this machine is "M92 LP [Mobility Radeon HD 4300 Series]" and I think the fglrx driver doesn't recognize this (see attached Xorg.0.log).
I found the solution was to add a file: /etc/pm/config.d/unload_modules containing: SUSPEND_MODULES="fglrx" I hope the fglrx-installer package can add this automatically in future. Some system info: lshw "display" section: *-display description: VGA compatible controller product: M92 LP [Mobility Radeon HD 4300 Series] vendor: ATI Technologies Inc physical id: 0 bus info: p...@0000:01:00.0 version: 00 width: 32 bits clock: 33MHz capabilities: pm pciexpress msi vga_controller bus_master cap_list rom configuration: driver=fglrx_pci latency=0 resources: irq:48 memory:e0000000-efffffff ioport:de00(size=256) memory:f6df0000-f6dfffff memory:f6d00000-f6d1ffff relevant section of lspci -v: 01:00.0 VGA compatible controller: ATI Technologies Inc M92 LP [Mobility Radeon HD 4300 Series] (prog-if 00 [VGA controller]) Subsystem: Dell Device 02aa Flags: bus master, fast devsel, latency 0, IRQ 48 Memory at e0000000 (32-bit, prefetchable) [size=256M] I/O ports at de00 [size=256] Memory at f6df0000 (32-bit, non-prefetchable) [size=64K] [virtual] Expansion ROM at f6d00000 [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: fglrx_pci Kernel modules: fglrx, radeon $ lsb_release -rd Description: Ubuntu 10.10 Release: 10.10 fglrx installed using hardware drivers (kubuntu version) ** Affects: fglrx-installer (Ubuntu) Importance: Undecided Status: New -- fglrx screen blank after suspend/resume Dell Inspiron 1545 https://bugs.launchpad.net/bugs/677917 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs