Re: dual screen: some operations are slow (nouveau driver)

[Vincent Lefevre <vincent@vinc17.net>]

On 2020-05-18 19:53:11 +0300, Andrei POPESCU wrote:
> On Lu, 18 mai 20, 15:57:05, Vincent Lefevre wrote:
> > 
> > I use Debian/unstable with the nouveau driver and the 5.6.0-1-amd64
> > kernel. Switching to the stable kernel does not seem to change
> > anything.
> 
> Hardware specs?

HP ZBook 15 G2 with 16 GB RAM and

01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK208GLM [Quadro K610M] [10de:12b9] (rev a1)

CPU and GPU related lshw information:

[...]
     *-cpu
          description: CPU
          product: Intel(R) Core(TM) i7-4810MQ CPU @ 2.80GHz
          vendor: Intel Corp.
          physical id: 9
          bus info: cpu@0
          version: Intel(R) Core(TM) i7-4810MQ CPU @ 2.80GHz
          serial: To Be Filled By O.E.M.
          slot: U3E1
          size: 1518MHz
          capacity: 3800MHz
          width: 64 bits
          clock: 100MHz
          capabilities: lm fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid xsaveopt dtherm ida arat pln pts md_clear flush_l1d cpufreq
          configuration: cores=4 enabledcores=4 threads=8
[...]
     *-pci
          description: Host bridge
          product: Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller
          vendor: Intel Corporation
          physical id: 100
          bus info: pci@0000:00:00.0
          version: 06
          width: 32 bits
          clock: 33MHz
        *-pci:0
             description: PCI bridge
             product: Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller
             vendor: Intel Corporation
             physical id: 1
             bus info: pci@0000:00:01.0
             version: 06
             width: 32 bits
             clock: 33MHz
             capabilities: pci pm msi pciexpress normal_decode bus_master cap_list
             configuration: driver=pcieport
             resources: irq:24 ioport:5000(size=4096) memory:d1000000-d20fffff ioport:70000000(size=301989888)
           *-display
                description: VGA compatible controller
                product: GK208GLM [Quadro K610M]
                vendor: NVIDIA Corporation
                physical id: 0
                bus info: pci@0000:01:00.0
                version: a1
                width: 64 bits
                clock: 33MHz
                capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
                configuration: driver=nouveau latency=0
                resources: irq:37 memory:d1000000-d1ffffff memory:70000000-7fffffff memory:80000000-81ffffff ioport:5000(size=128) memory:c0000-dffff
           *-multimedia
                description: Audio device
                product: GK208 HDMI/DP Audio Controller
                vendor: NVIDIA Corporation
                physical id: 0.1
                bus info: pci@0000:01:00.1
                version: a1
                width: 32 bits
                clock: 33MHz
                capabilities: pm msi pciexpress bus_master cap_list
                configuration: driver=snd_hda_intel latency=0
                resources: irq:17 memory:d2000000-d2003fff
[...]

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Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)