Red Hat Bugzilla – Bug 195767
SiS VGA card needs DPMS help during suspend to RAM
Last modified: 2015-03-04 20:17:14 EST
Description of problem:
The monitor is not turned off during a suspend to RAM.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Edit /usr/sbin/pm-suspend so that it echos "standby" instead of "mem" into
2. modprobe -r acpi_cpufreq (see Bug #195367)
3. Run pm-suspend .
Mointor stays on and
Stopping taks: ===========|
and a flashing '_' cursor are visible.
Monitor to be put into power saving mode and powersaving to be left when a
resume takes place.
Ubuntu Dapper does
/usr/sbin/vbetool dpms suspend
for all graphics cards by default (I guess the thining goes that other than
super old cards there is no harm in turning the monitor off twice).
02:03.0 VGA compatible controller: Silicon Integrated Systems [SiS] 315PRO
PCI/AGP VGA Display Adapter (prog-if 00 [VGA])
Subsystem: Silicon Integrated Systems [SiS] 315PRO PCI/AGP VGA Display
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 39 (750ns min, 4000ns max)
Interrupt: pin A routed to IRQ 5
BIST result: 00
Region 0: Memory at d0000000 (32-bit, prefetchable) [size=256M]
Region 1: Memory at e5000000 (32-bit, non-prefetchable) [size=256K]
Region 2: I/O ports at c400 [size=128]
[virtual] Expansion ROM at e4020000 [disabled] [size=64K]
Capabilities:  Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Created attachment 131098 [details]
/etc/pm/ helper script
Created attachment 131099 [details]
Created attachment 131100 [details]
FC5 is now end of life, so sadly this bug won't be fixed in this release. Is
this bug still present in FC6 or F7?
Since filing this bug over a year ago the machine had its SiS graphics card
swapped away for an NVIDIA so I can't follow up on this.
Let's resolve this INSUFFICIENT_DATA.