$ qemu-system-x86_64 -M isapc -chardev file,path=/dev/fd/1,id=seabios -device isa-debugcon,iobase=0x402,chardev=seabios Start bios (version 1.7.0-20120603_194846-gandalf) Unable to unlock ram - bridge not found Ram Size=0x00000000 (0x0000000000000000 high) WARNING - Unable to allocate resource at addSpace:118! WARNING - Unable to allocate resource at addSpace:118! WARNING - Unable to allocate resource at addSpace:118! No space for init relocation.
$ qemu-system-x86_64 -M isapc -enable-kvm -chardev file,path=/dev/fd/1,id=seabios -device isa-debugcon,iobase=0x402,chardev=seabios Start bios (version 1.7.0-20120603_194846-gandalf) Unable to unlock ram - bridge not found Ram Size=0x08000000 (0x0000000000000000 high) Relocating init from 0x000e4540 to 0x07fe1d80 (size 57684) === PCI bus & bridge init === Detected non-PCI system No apic - only the main cpu is present. MP table addr=0x000fdb00 MPC table addr=0x000fdb10 size=216 SMBIOS ptr=0x000fdae0 table=0x000fd9d0 size=263 Scan for VGA option rom Running option rom at c000:0003 Turning on vga text mode console SeaBIOS (version 1.7.0-20120603_194846-gandalf) So without kvm, the RAM size is detected as being 0. FWIW. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1024248 Title: qemu -M isapc displays blank screen Status in QEMU: Confirmed Status in “qemu” package in Debian: Confirmed Bug description: $ qemu-system-x86_64 -M isapc This displays blank SDL window. It has been this way since forever I guess, at least according to http://bugs.debian.org/605525 (a Debian bugreport about it). However, this: $ qemu-system-x86_64 -M isapc -enable-kvm works (at least in current 1.1), and it works fine in qemu-kvm. On the other hand, this: $ qemu-kvm -M isapc -no-kvm also shows blank window. Something is wrong with isapc & TCG, and has been for a long time... Thanks, /mjt To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1024248/+subscriptions